The case for the utility of Kruskal–Szekeres coordinates in the classroom made by Augousti et al in
this journal (2012 Eur. J. Phys. 33 [http://https://doi.org/10.1088/0143-0807/33/1/001] 1–11 ) is
strengthened by extending their discussion beyo…
Electrostatics at the molecular level
In molecular systems, positive and negative charges are separated, making them ideal systems to
examine electrostatic interactions. The attractive force between positive and negative charges is
balanced by repulsive ‘forces’ that are quantum-mech…
Quantum-elastic bump on a surface
We use an exact solution of the elastic membrane shape equation, representing the curvature, which
will serve as a quantum potential in the quantum mechanical two dimensional Schrödinger equation for
a (quasi-) particle on the surface of the membran…
Welcome aboard
Thomas Pesquet, Oleg Novitsky and Peggy Whitson arrive at the International Space Station
Docking replay
Thomas Pesquet and crewmates arrive at the International Space Station, aboard Soyuz MS-03
ESA astronaut Thomas Pesquet arrives at the International Space Station
ESA astronaut Thomas Pesquet, NASA astronaut Peggy Whitson and Roscosmos commander Oleg Novitsky docked with the International Space Station today after a two-day flight in their Soyuz MS-03 spacecraft.
Chinese space greetings
Video: astronauts on Chinese space station Tiangong-2 greet ESA and Thomas Pesquet
New Ceres Views as Dawn Moves Higher
Newly released images of Ceres from NASA’s Dawn spacecraft showcase the dwarf planet’s diversity and wonder.
New Ceres Views as Dawn Moves Higher
Newly released images of Ceres from NASA’s Dawn spacecraft showcase the dwarf planet’s diversity and wonder.
Porosity Governs Normal Stresses in Polymer Gels
Author(s): Henri C. G. de Cagny, Bart E. Vos, Mahsa Vahabi, Nicholas A. Kurniawan, Masao Doi, Gijsje H. Koenderink, F. C. MacKintosh, and Daniel Bonn
A new theory explains why fluid-filled filamentary networks contract in response to a sideways force.
[Phys. Rev. Lett. 117, 217802] Published Fri Nov 18, 2016
Demonstration of Weight-Four Parity Measurements in the Surface Code Architecture
Author(s): Maika Takita, A. D. Córcoles, Easwar Magesan, Baleegh Abdo, Markus Brink, Andrew Cross, Jerry M. Chow, and Jay M. Gambetta
A surface code quantum error correcting protocol is experimentally demonstrated with a network of five superconducting transmon qubits.
[Phys. Rev. Lett. 117, 210505] Published Fri Nov 18, 2016
Demonstration of Weight-Four Parity Measurements in the Surface Code Architecture
Author(s): Maika Takita, A. D. Córcoles, Easwar Magesan, Baleegh Abdo, Markus Brink, Andrew Cross, Jerry M. Chow, and Jay M. Gambetta
A surface code quantum error correcting protocol is experimentally demonstrated with a network of five superconducting transmon qubits.
[Phys. Rev. Lett. 117, 210505] Published Fri Nov 18, 2016
Porosity Governs Normal Stresses in Polymer Gels
Author(s): Henri C. G. de Cagny, Bart E. Vos, Mahsa Vahabi, Nicholas A. Kurniawan, Masao Doi, Gijsje H. Koenderink, F. C. MacKintosh, and Daniel Bonn
A new theory explains why fluid-filled filamentary networks contract in response to a sideways force.
[Phys. Rev. Lett. 117, 217802] Published Fri Nov 18, 2016
Week In Images
Our week through the lens: 14-18 November 2016
GOES-R satellite will launch tomorrow
Most advanced geostationary weather satellite is ready to launch
ESA’s new Mars orbiter prepares for first science
The ExoMars orbiter is preparing to make its first scientific observations at Mars during two orbits of the planet starting next week.
Newest fast radio burst hints at makeup of the cosmic web
What FRBs can teach us about the universe
Proxima launch
Replay: ESA astronaut Thomas Pesquet, NASA astronaut Peggy Whitson and commander Oleg Novitsky heading to the International Space Station
Proxima liftoff
ESA astronaut Thomas Pesquet, NASA astronaut Peggy Whitson and commander Oleg Novitsky were launched into space at 20:20 GMT (21:20 CET)
Study Finds Widespread Land Losses from Gulf Oil Spill
Dramatic shoreline loss is revealed in new NASA/USGS maps of Louisiana wetlands where the coastline was heavily coated with oil during the 2010 Gulf of Mexico oil spill.
Study Finds Widespread Land Losses from Gulf Oil Spill
Dramatic shoreline loss is revealed in new NASA/USGS maps of Louisiana wetlands where the coastline was heavily coated with oil during the 2010 Gulf of Mexico oil spill.
Galileo: 18 today
Another four satellites join Europe’s own satellite navigation system, launched for the first time by Ariane 5
Proxima mission begins
ESA astronaut Thomas Pesquet, NASA astronaut Peggy Whitson and Roscosmos commander Oleg Novitsky blasted into space this evening from the Baikonur cosmodrome in Kazakhstan at 20:20 GMT. Their Soyuz MS-03 spacecraft is now safely heading to…
Earth from Space
Join us Friday, 18 November, at 10:00 CET for the ‘Earth from Space’ video programme. This week features burn scars in Australia’s Gibson Desert
Galileo replay part 1
Replay the full coverage of the liftoff and early ascent of Europe’s next four Galileo satellites, which lifted off at 13:06 GMT (14:06 CET, 10:06 local time) on 17 November
Galileo liftoff replay
Europe’s next four Galileo satellites lifted off at 13:06 GMT (14:06 CET, 10:06 local time) on 17 November from Europe’s Spaceport in French Guiana atop an Ariane 5 launcher
Launch of new Galileo navigation quartet
An Ariane 5 rocket has launched four additional Galileo satellites, accelerating deployment of the new satellite navigation system.
Kepler 11145123 attained a new status
This distant star is much different from others
Doomsday dinosaur crater could have sheltered life
The same sort of cataclysmic impact that wiped out the dinosaurs 66 million years ago could have provided a refuge for life early in Earth’s history, when space rocks regularly pummeled the planet.
That’s the finding of a group of research…
Sentinel sees us
Operations image of the week: An impressive view of Germany’s Rhine-Main area, which includes ESA’s Sentinel mission control centre
Quantum mechanical wavefunction: visualization at undergraduate level
Quantum mechanics (QM) forms the most crucial ingredient of modern-era physical science curricula at
undergraduate level. The abstract ideas involved in QM related concepts pose a challenge towards
appropriate visualization as a consequence of their …
Quantum mechanical wavefunction: visualization at undergraduate level
Quantum mechanics (QM) forms the most crucial ingredient of modern-era physical science curricula at
undergraduate level. The abstract ideas involved in QM related concepts pose a challenge towards
appropriate visualization as a consequence of their …
NASA Microthrusters Achieve Success on ESA’s LISA Pathfinder
The super-precise JPL thruster system has met all its mission goals on the LISA Pathfinder mission.
NASA Microthrusters Achieve Success on ESA’s LISA Pathfinder
The super-precise JPL thruster system has met all its mission goals on the LISA Pathfinder mission.
Probing Greenland’s ice sheet for future satellites
With a helicopter the sole feature on the vast expanse of ice and her only way back to warmth and safety, polar scientist Anna Hogg must have thought, “What on Earth am I doing out here?” as she set to taking ice samples.
Observation of Collective Coupling between an Engineered Ensemble of Macroscopic Artificial Atoms and a Superconducting Resonator
Author(s): Kosuke Kakuyanagi, Yuichiro Matsuzaki, Corentin Déprez, Hiraku Toida, Kouichi Semba, Hiroshi Yamaguchi, William J. Munro, and Shiro Saito
Coherent coupling is experimentally observed between an LC resonator and 4300 superconducting flux qubits.
[Phys. Rev. Lett. 117, 210503] Published Wed Nov 16, 2016
Comparison of Spectral Linewidths for Quantum Degenerate Bosons and Fermions
Author(s): R. P. M. J. W. Notermans, R. J. Rengelink, and W. Vassen
Precision measurements of an atomic transition in cold gases of helium-4 and helium-3 isolate the effects of quantum statistics on the transition’s line shape.
[Phys. Rev. Lett. 117, 213001] Published Wed Nov 16, 2016
Phase-Controlled Bistability of a Dark Soliton Train in a Polariton Fluid
Author(s): V. Goblot, H. S. Nguyen, I. Carusotto, E. Galopin, A. Lemaître, I. Sagnes, A. Amo, and J. Bloch
A previously unseen bistable behavior is experimentally observed in a counter-propagating interacting polariton fluid resonantly excited in a 1D semiconductor microcavity.
[Phys. Rev. Lett. 117, 217401] Published Wed Nov 16, 2016
Dressed Hard States and Black Hole Soft Hair
Author(s): Mehrdad Mirbabayi and Massimo PorratiA new analysis argues that soft black hole hair, introduced recently by Hawking, Perry, and Strominger, may not carry quantum information about the black hole relevant for the information loss paradox.[Ph…
Observation of Collective Coupling between an Engineered Ensemble of Macroscopic Artificial Atoms and a Superconducting Resonator
Author(s): Kosuke Kakuyanagi, Yuichiro Matsuzaki, Corentin Déprez, Hiraku Toida, Kouichi Semba, Hiroshi Yamaguchi, William J. Munro, and Shiro Saito
Coherent coupling is experimentally observed between an LC resonator and 4300 superconducting flux qubits.
[Phys. Rev. Lett. 117, 210503] Published Wed Nov 16, 2016
Phase-Controlled Bistability of a Dark Soliton Train in a Polariton Fluid
Author(s): V. Goblot, H. S. Nguyen, I. Carusotto, E. Galopin, A. Lemaître, I. Sagnes, A. Amo, and J. Bloch
A previously unseen bistable behavior is experimentally observed in a counter-propagating interacting polariton fluid resonantly excited in a 1D semiconductor microcavity.
[Phys. Rev. Lett. 117, 217401] Published Wed Nov 16, 2016
Dressed Hard States and Black Hole Soft Hair
Author(s): Mehrdad Mirbabayi and Massimo PorratiA new analysis argues that soft black hole hair, introduced recently by Hawking, Perry, and Strominger, may not carry quantum information about the black hole relevant for the information loss paradox.[Ph…
Comparison of Spectral Linewidths for Quantum Degenerate Bosons and Fermions
Author(s): R. P. M. J. W. Notermans, R. J. Rengelink, and W. Vassen
Precision measurements of an atomic transition in cold gases of bosonic helium-4 and fermionic helium-3 isolate the effects of quantum statistics on the transition’s line shape.
[Phys. Rev. Lett. 117, 213001] Published Wed Nov 16, 2016
Cool bit of kit
Technology image of the week: a commercially-available ‘atom interferometer’ using clouds of supercooled atoms to perform precise measurements, on show at ESA’s inaugural Quantum Technology workshop
A Subsurface Ocean May Give Pluto a Heavy Heart
Pluto may be the latest place in the solar system to show evidence of liquid water.
Scientists found a valley on Mercury
This valley may have been formed in a very Earth-like way
New trailer for Hidden Figures will pull on your heartstrings
Trailer shows what the women go through to achieve the impossible
The emergence of Melloni’s optical bench
In this paper we address the emergence of one of the most common instruments in 19th century physics
laboratories, Melloni’s optical bench, relying on the analysis of the most significant historical
documents. This apparatus, devised in 1835 by Mac…
An ideal free-kick
The kinematics of a free-kick is studied. As in projectile motion, the free-kick is ideal since we
assume that a point-like ball moves in the absence of air resistance. We have experienced the
fortunate conjuncture of a classical mechanics lecture ta…
The emergence of Melloni’s optical bench
In this paper we address the emergence of one of the most common instruments in 19th century physics
laboratories, Melloni’s optical bench, relying on the analysis of the most significant historical
documents. This apparatus, devised in 1835 by Mac…
An ideal free-kick
The kinematics of a free-kick is studied. As in projectile motion, the free-kick is ideal since we
assume that a point-like ball moves in the absence of air resistance. We have experienced the
fortunate conjuncture of a classical mechanics lecture ta…
Proxima live
Watch the docking of ESA astronaut Thomas Pesquet, NASA astronaut Peggy Whitson and commander Oleg Novitsky to the Space Station – starting Saturday at 21:30 GMT
Experimental Ten-Photon Entanglement
Author(s): Xi-Lin Wang, Luo-Kan Chen, W. Li, H.-L. Huang, C. Liu, C. Chen, Y.-H. Luo, Z.-E. Su, D. Wu, Z.-D. Li, H. Lu, Y. Hu, X. Jiang, C.-Z. Peng, L. Li, N.-L. Liu, Yu-Ao Chen, Chao-Yang Lu, and Jian-Wei PanAn entangled polarization state of ten phot…
Experimental Ten-Photon Entanglement
Author(s): Xi-Lin Wang, Luo-Kan Chen, W. Li, H.-L. Huang, C. Liu, C. Chen, Y.-H. Luo, Z.-E. Su, D. Wu, Z.-D. Li, H. Lu, Y. Hu, X. Jiang, C.-Z. Peng, L. Li, N.-L. Liu, Yu-Ao Chen, Chao-Yang Lu, and Jian-Wei PanAn entangled polarization state of ten phot…
Farewell to Sentinel-2B
Just weeks before Sentinel-2B is packed up and sent to French Guiana for its launch next March, media representatives and specialists got one last look at the second satellite for Europe’s Copernicus programme.
Watch Galileo launch
See the launch of Galileo satellites 15–18 on Thursday 17 November. Streaming starts at 12:36 GMT (13:36 CET)
The next era of space
ESA’s Ministerial Council 2016 is being held in Lucerne, Switzerland, 1 and 2 December
Ready for launch
Human spaceflight and robotic exploration image of the week: Soyuz rocket ready to launch ESA astronaut Thomas Pesquet to the Space Station
Project Blue kicks off citizen-driven campaign
The team’s Kickstarter campaign could contribute to a historic effort
‘Ice cauldrons’ could tells us if there’s life on Mars
These craters be a key ingredient in Martian life
First GRACE Follow-On Satellite Completes Construction
The first of two satellites has been completed for a follow-on to NASA’s GRACE mission.
First GRACE Follow-On Satellite Completes Construction
The first of two satellites has been completed for a follow-on to NASA’s GRACE mission.
Ultrafast Long-Distance Quantum Communication with Static Linear Optics
Author(s): Fabian Ewert, Marcel Bergmann, and Peter van LoockTheorists propose that an all-optical scheme for long-distance quantum communication could be made using quantum error correcting codes. Unlike others, this scheme does not require fast feedf…
Relativistic Electrons Produced by Foreshock Disturbances Observed Upstream of Earth’s Bow Shock
Author(s): L. B. Wilson, III, D. G. Sibeck, D. L. Turner, A. Osmane, D. Caprioli, and V. Angelopoulos
The THEMIS spacecraft has observed surprisingly high velocity electrons upstream of where the solar wind collides with Earth’s magnetosphere. Current theories of ion acceleration in foreshock disturbances cannot account for the high relativistic energies of these electrons.
[Phys. Rev. Lett. 117, 215101] Published Mon Nov 14, 2016
Two-Color Coherent Control of Femtosecond Above-Threshold Photoemission from a Tungsten Nanotip
Author(s): Michael Förster, Timo Paschen, Michael Krüger, Christoph Lemell, Georg Wachter, Florian Libisch, Thomas Madlener, Joachim Burgdörfer, and Peter Hommelhoff
By firing laser pulses of two different colors at a nanosized metal tip, researchers create an interference effect that turns electron emission on and off with femtosecond timing.
[Phys. Rev. Lett. 117, 217601] Published Mon Nov 14, 2016
Ultrafast Long-Distance Quantum Communication with Static Linear Optics
Author(s): Fabian Ewert, Marcel Bergmann, and Peter van LoockTheorists propose that an all-optical scheme for long-distance quantum communication could be made using quantum error correcting codes. Unlike others, this scheme does not require fast feedf…
Two-Color Coherent Control of Femtosecond Above-Threshold Photoemission from a Tungsten Nanotip
Author(s): Michael Förster, Timo Paschen, Michael Krüger, Christoph Lemell, Georg Wachter, Florian Libisch, Thomas Madlener, Joachim Burgdörfer, and Peter Hommelhoff
By firing laser pulses of two different colors at a nanosized metal tip, researchers create an interference effect that turns electron emission on and off with femtosecond timing.
[Phys. Rev. Lett. 117, 217601] Published Mon Nov 14, 2016
Relativistic Electrons Produced by Foreshock Disturbances Observed Upstream of Earth’s Bow Shock
Author(s): L. B. Wilson, III, D. G. Sibeck, D. L. Turner, A. Osmane, D. Caprioli, and V. Angelopoulos
The THEMIS spacecraft has observed surprisingly high velocity electrons upstream of where the solar wind collides with Earth’s magnetosphere. Current theories of ion acceleration in foreshock disturbances cannot account for the high relativistic energies of these electrons.
[Phys. Rev. Lett. 117, 215101] Published Mon Nov 14, 2016
3D models shed some light on Beagle 2 lander’s fate, but questions remain
How engineers are investigating from 34 million miles away
The woman who named the moon and clocked variable stars
Mary Adela Blagg was a talented astronomer in two fields, but her work has been forgotten.
Far away, so close
Space Science Image of the Week: The three closest pictures of Rosetta’s comet taken by the navigation camera in September
2016. a. EFS loodus- ja täppisteaduste sügiskool
Sügiskool toimus sel aastal Kääriku Spordikeskuses 4.-6. novembril. Osavõtjaid oli 128, ettekandeid 10+5. Paralleelselt ettekannetega toimus ESTCube-2 meeskonna tööseminar. Kava ja pildigalerii leiab sellelt lingilt. Lisaks teadlaste ettekannetele kuulasime ära ka viis õpilasettekannet. Esinesid Karl-Ander Kasuk (Tallinna Reaalkool), Laima Šusta (Tallinna Reaalkool), Gregor Eesma (Tartu Jaan Poska Gümnaasium), Eva-Maria Tõnson (Hugo Treffneri Gümnaasium) ja Aksel […]
Atom-Chip Fountain Gravimeter
Author(s): S. Abend, M. Gebbe, M. Gersemann, H. Ahlers, H. Müntinga, E. Giese, N. Gaaloul, C. Schubert, C. Lämmerzahl, W. Ertmer, W. P. Schleich, and E. M. Rasel
A new gravity-measuring device uses ultracold atoms generated by a centimeter-wide atom chip, which might lead to a shoebox-sized gadget.
[Phys. Rev. Lett. 117, 203003] Published Fri Nov 11, 2016
Measuring the Degeneracy of Discrete Energy Levels Using a GaAs/AlGaAs Quantum Dot
Author(s): A. Hofmann, V. F. Maisi, C. Gold, T. Krähenmann, C. Rössler, J. Basset, P. Märki, C. Reichl, W. Wegscheider, K. Ensslin, and T. Ihn
Two new transport measurements in GaAs quantum dots–one addressing spin-related transport, another quantum state degeneracy–use methods that could be adopted in other systems.
[Phys. Rev. Lett. 117, 206803] Published Fri Nov 11, 2016
Signatures of Hyperfine, Spin-Orbit, and Decoherence Effects in a Pauli Spin Blockade
Author(s): T. Fujita, P. Stano, G. Allison, K. Morimoto, Y. Sato, M. Larsson, J.-H. Park, A. Ludwig, A. D. Wieck, A. Oiwa, and S. Tarucha
Two new transport measurements in GaAs quantum dots–one addressing spin-related transport, another quantum state degeneracy–use methods that could be adopted in other systems.
[Phys. Rev. Lett. 117, 206802] Published Fri Nov 11, 2016
Measuring the Degeneracy of Discrete Energy Levels Using a GaAs/AlGaAs Quantum Dot
Author(s): A. Hofmann, V. F. Maisi, C. Gold, T. Krähenmann, C. Rössler, J. Basset, P. Märki, C. Reichl, W. Wegscheider, K. Ensslin, and T. Ihn
Two new transport measurements in GaAs quantum dots–one addressing spin-related transport, another quantum state degeneracy–use methods that could be adopted in other systems.
[Phys. Rev. Lett. 117, 206803] Published Fri Nov 11, 2016
Signatures of Hyperfine, Spin-Orbit, and Decoherence Effects in a Pauli Spin Blockade
Author(s): T. Fujita, P. Stano, G. Allison, K. Morimoto, Y. Sato, M. Larsson, J.-H. Park, A. Ludwig, A. D. Wieck, A. Oiwa, and S. Tarucha
Two new transport measurements in GaAs quantum dots–one addressing spin-related transport, another quantum state degeneracy–use methods that could be adopted in other systems.
[Phys. Rev. Lett. 117, 206802] Published Fri Nov 11, 2016
Atom-Chip Fountain Gravimeter
Author(s): S. Abend, M. Gebbe, M. Gersemann, H. Ahlers, H. Müntinga, E. Giese, N. Gaaloul, C. Schubert, C. Lämmerzahl, W. Ertmer, W. P. Schleich, and E. M. Rasel
A new gravity-measuring device uses ultracold atoms generated by a centimeter-wide atom chip, which might lead to a shoebox-sized gadget.
[Phys. Rev. Lett. 117, 203003] Published Fri Nov 11, 2016
Week In Images
Our week through the lens: 7-11 November 2016
Movie review: Arrival is the brilliant sci-fi this year needs
The new film from Sicario director Denis Villenueve may be the most thought provoking movie of the year
About that “myserious” bit of space debris — it’s not so mysterious after all
Despite headlines to the contrary, people who track space debris know exactly what it is.
Hunting for the origins of life on a possibly dangerous asteroid
Mining a deadly threat for clues to life’s origins
NASA Space Telescopes Pinpoint Elusive Brown Dwarf
Two NASA space telescopes jointly observed a microlensing event, when a distant star brightens due to the gravitational field of at least one foreground cosmic object.
NASA to Launch Fleet of Hurricane-Tracking SmallSats
NASA is set to launch its first Earth science small-satellite constellation, which will help improve hurricane intensity, track and storm surge forecasts, on Dec. 12.
NASA to Launch Fleet of Hurricane-Tracking SmallSats
NASA is set to launch its first Earth science small-satellite constellation, which will help improve hurricane intensity, track and storm surge forecasts, on Dec. 12.
NASA Space Telescopes Pinpoint Elusive Brown Dwarf
Two NASA space telescopes jointly observed a microlensing event, when a distant star brightens due to the gravitational field of at least one foreground cosmic object.
Earth from Space
Join us Friday, 11 November, at 10:00 CET for the ‘Earth from Space’ video programme. This week features the Virunga Mountains in East Africa
Topological Surface States in Dense Solid Hydrogen
Author(s): Ivan I. Naumov and Russell J. HemleySolid hydrogen phases could be produced at megabar pressures that are poor bulk metals but have high surface conductivity, possibly explaining the differing experimental results on hydrogen realized under …
Photocell Optimization Using Dark State Protection
Author(s): Amir Fruchtman, Rafael Gómez-Bombarelli, Brendon W. Lovett, and Erik M. Gauger
The efficiency of a photocell could be improved using the effects of quantum interference, according to a new theory.
[Phys. Rev. Lett. 117, 203603] Published Thu Nov 10, 2016
Magnon Polarons in the Spin Seebeck Effect
Author(s): Takashi Kikkawa, Ka Shen, Benedetta Flebus, Rembert A. Duine, Ken-ichi Uchida, Zhiyong Qiu, Gerrit E. W. Bauer, and Eiji Saitoh
A magnon-phonon resonance is observed using the spin Seebeck effect whereby a spin current is generated from a temperature gradient in magnetic materials.
[Phys. Rev. Lett. 117, 207203] Published Thu Nov 10, 2016
Magnon Polarons in the Spin Seebeck Effect
Author(s): Takashi Kikkawa, Ka Shen, Benedetta Flebus, Rembert A. Duine, Ken-ichi Uchida, Zhiyong Qiu, Gerrit E. W. Bauer, and Eiji Saitoh
A magnon-phonon resonance is observed using the spin Seebeck effect whereby a spin current is generated from a temperature gradient in magnetic materials.
[Phys. Rev. Lett. 117, 207203] Published Thu Nov 10, 2016
Topological Surface States in Dense Solid Hydrogen
Author(s): Ivan I. Naumov and Russell J. HemleySolid hydrogen phases could be produced at megabar pressures that are poor bulk metals but have high surface conductivity, possibly explaining the differing experimental results on hydrogen realized under …
Photocell Optimization Using Dark State Protection
Author(s): Amir Fruchtman, Rafael Gómez-Bombarelli, Brendon W. Lovett, and Erik M. Gauger
The efficiency of a photocell could be improved using the effects of quantum interference, according to a new theory.
[Phys. Rev. Lett. 117, 203603] Published Thu Nov 10, 2016
The Subaru Telescope has a new instrument for finding planetary atmospheres
Princeton’s new device can help astronomers learn more about planets from their spectra
How to watch the Leonid meteor shower, the fastest in the sky
A bright Moon will diminish the impact of this month’s mighty Leonid meteor shower, but not all hope is lost to see the lion’s roar.
Virtual Milky Way
Operations image of the week: A ghostly image of our Milky Way galaxy derived from satellite orientation data
Weightless vibrations
Human spaceflight and robotic exploration image of the week: Vibrating ceramics in weightlessness to move liquids
Radial Acceleration Relation in Rotationally Supported Galaxies
Author(s): Stacy S. McGaugh, Federico Lelli, and James M. SchombertA universal law shows that the rotation of a disk galaxy is determined entirely by the visible matter it contains, even if the disk is mostly filled with dark matter.[Phys. Rev. Lett. 1…
Radial Acceleration Relation in Rotationally Supported Galaxies
Author(s): Stacy S. McGaugh, Federico Lelli, and James M. SchombertA universal law shows that the rotation of a disk galaxy is determined entirely by the visible matter it contains, even if the disk is mostly filled with dark matter.[Phys. Rev. Lett. 1…
Iceberg patrol gains faster updates from orbit
The international iceberg patrol service set up after the sinking of the Titanic is now able to track drifting ice from orbit more swiftly through ESA-backed cloud computing.