Using NASA’s Spitzer Space Telescope, astronomers have confirmed the discovery of the nearest rocky planet outside our solar system, larger than Earth and a potential gold mine of science data.
California ‘Rain Debt’ Equal to Average Full Year of Precipitation
A new NASA study has concluded California accumulated a debt of about 20 inches of precipitation between 2012 and 2015.
Science on the surface of a comet
Complex molecules that could be key building blocks of life, the daily rise and fall of temperature, and an assessment of the surface properties and internal structure of the comet are just some of the highlights of the first scientific analysis of the data returned by Rosetta’s lander Philae last November.
Earth from Space

Join us Friday, 31 July, at 10:00 CEST for the ‘Earth from Space’ video programme. This week features a Sentinel-2A image of northern Italy
Unusual red arcs spotted on Saturn’s icy moon Tethys
Narrow, curved red lines on Tethys’ surface are among the most unusual color features on Saturn’s moons to be revealed by Cassini’s cameras.
Spitzer confirms closest rocky exoplanet
Dubbed HD 219134b, this exoplanet, which orbits too close to its star to sustain life, is a mere 21 light-years away.
Third spaceflight for astronaut Paolo Nespoli
ESA astronaut Paolo Nespoli will be heading for space a third time, as part of Expeditions 52 and 53 to the International Space Station. He will be launched on a Soyuz vehicle in May 2017 on a five-month mission.
Tracking spacecraft through the cosmos contest: enter and win

Musicians, composers and audio buffs are invited to help celebrate 40 years of ESA’s tracking station network. Create some truly cosmic sound and you may win impressive prizes, including a trip to our anniversary gala event in Spain.
Unusual Red Arcs Spotted on Icy Saturn Moon
Unexplained arc-shaped, reddish streaks are visible on the surface of Saturn’s icy moon Tethys in new, enhanced-color images from NASA’s Cassini spacecraft.
Surfing for science
Thanks to a new system developed by scientists in the UK, taking to the waves for a spot of surfing can benefit research into the health of coastal waters, and could help confirm satellite measurements of sea-surface temperature.
Space Kombucha in the search for life and its origin
You might know it as a drink for hipsters or as an ancient brew drunk for centuries in Eurasia, but the culture that ferments sugary tea into Kombucha is going around the world. Bolted to the outside of the International Space Station are …
First detection of lithium from an exploding star
Observations of Nova Centauri 2013 help to explain the mystery of why many young stars seem to have more of this chemical element than expected.
Astronomers discover powerful aurora beyond solar system
The scientists found the aurora not from a planet, but from a low-mass star at the boundary between stars and brown dwarfs.
New Names and Insights at Ceres
Colorful new maps of Ceres, based on NASA’s Dawn spacecraft data, showcase a diverse topography, with dramatic height differences between crater bottoms and mountain peaks.
NASA Mars Orbiter Preparing for Mars Lander’s 2016 Arrival
NASA’s Mars Reconnaissance Orbiter will fire thrusters on Wednesday for a maneuver to get into position for the 2016 arrival of NASA’s next Mars lander.
Orbital handover

Human spaceflight and operations image of the week: MSG-4 controllers hand over Europe’s newest weather satellite
Ceres gets new maps, new names
Now with detailed topography and official feature names from the IAU, these maps of asteroid Ceres are worth exploring.
Dense galaxies hiding in plain sight
Undergraduates discovered two tiny galaxies crammed with stars at more than 10,000 times the density of the Milky Way.
First applications from Sentinel-2A

From agricultural monitoring to charting changing lands, early images from Europe’s new Sentinel-2A satellite show how the ‘colour vision’ mission’s critical observations can be used to keep us and our planet safe.
Introducing Sentinel-2

Discover some of the mission’s benefits for the planet’s ever-growing population, such as deforestation monitoring, food security and the sustainable management of natural resources
Born-again nebula
Space Science image of the week: XMM-Newton’s view of an eye-shaped cloud carved by a dying star’s brief comeback to life
Next two Galileo satellites reach Europe’s Spaceport

Europe’s ninth and tenth Galileo satellites have crossed the Atlantic, touching down in French Guiana ahead of their joint launch this September.
New Hubble image shows cosmic wind creating “Pillars of Destruction”
A new study shows how cosmic winds can erode a galaxy’s gas and dust, shutting down star formation.
Fossil star clusters reveal their age
A new survey of globular clusters show many of the star groups are almost as old as the universe itself.
ESA hands over control of the MSG-4 weather satellite

On 26 July at 09:30 GMT (11:30 CEST), ESA handed control of Europe’s last Meteosat Second Generation weather satellite, MSG-4, to EUMETSAT
New Horizons team finds haze, flowing ice on Pluto
Just 10 days after closest approach, the distant world is showing a diversity of planetary geology that has mission scientists thrilled.
Week In Images
Our week through the lens: 20-24 July 2015
Explore the Space Station

Explore the International Space Station with ESA astronaut Samantha Cristoforetti as your guide in this 360° interactive view
Andreas Mogensen launch moved by a day

The next ESA astronaut to work on the International Space Station, Andreas Mogensen, will arrive a day later than previously planned because the Station’s orbit has been changed.
The Danish flight engineer, commander Sergei Volkov and Kazakh cosmonaut Aidyn Aimbetov will leave Earth from Baikonur, Kazakhstan, at 4:34 GMT (6:34 CEST, 10:34 local time) on 2 September and arrive at the Space Station just six hours later.
Andreas and Aidyn’s stay will be short – they will be back on terra firma just 10 days later. They will leave Sergei on the Station and return to Earth in a different Soyuz under commander Gennady Padalka, who is already in space.
Brown dwarfs, stars share formation process, new study indicates
This is the first time that jets have been found coming from brown dwarfs at such an early stage of their formation and shows that they form in a way similar to that of stars.
NASA’s Kepler Mission Discovers Bigger, Older Cousin to Earth
NASA’s Kepler mission has confirmed the first near-Earth-size planet in the “habitable zone” around a sun-like star.
Finding Another Earth
Kepler’s newest planetary find joins a pantheon of planets with similarities to Earth.
Less Algae, Not Clearer Water, Keeps Tahoe Blue
Lake Tahoe’s iconic blueness is more strongly related to the lake’s algal concentration than to its clarity.
NASA’s Curiosity Rover Inspects Unusual Bedrock
The laser-firing instrument on NASA’s Curiosity Mars rover has identified a rock target that is rich in silica, prompting further investigation with the rover.
Earth from Space

Join us Friday, 24 July, at 10:00 CEST for the ‘Earth from Space’ video programme. This week features a Sentinel-1 radar image over southern Bavaria
Pulsar punches hole in stellar disk
Scientists have discovered a binary system where a rapidly spinning neutron star’s wind is rocketing away material from the disk around its companion.
Kepler mission discovered bigger, older cousin to Earth
The newly discovered Kepler-452b is the smallest planet to date discovered orbiting in the habitable zone or a G2-type star like our Sun.
Could ‘Windbots’ Someday Explore the Skies of Jupiter?
Wind-harvesting robotic probes might someday explore the atmospheres of other planets, as well as our home planet, thanks to an innovative NASA JPL study.
A Wi-Fi Reflector Chip To Speed Up Wearables
Researchers at JPL and UCLA have developed a technology that could reduce the power needed to send information from wearable devices.
New Website Gathering Public Input on NASA Mars Images
Mars researchers are soliciting volunteers to locate odd polar-area features on Mars that have names such as “Swiss cheese terrain” and “spiders.”
Heat on Mercury antenna
Technology image of the week: Testing the antenna that will keep ESA’s Mercury mission linked to Earth
ALMA witnesses assembly of galaxies in the early universe for the first time
The new observations allow astronomers to start to see how the first galaxies were built up and how they cleared the cosmic fog during the era of reionization.
New Horizons finds second mountain range in Pluto’s “heart”
The heights of these mountains are comparable to those found in the U.S. Appalachian range.
New Horizons captures two of Pluto’s smaller moons
As more data on Nix and Hydra come back from the spacecraft, scientists will be able to make more detailed findings on these moons’ surface characteristics and other properties.
Greenland’s Undercut Glaciers Melting Faster than Thought
Greenland’s glaciers are badly undercut and melting faster than thought, raising sea levels faster than currently estimated.
Dark science
Human spaceflight and operations image of the week: Container for storing snow samples at the remotest base in the world
Dead galaxies in Coma Cluster may be packed with dark matter
New computer simulations show that these galaxies stopped star formation as early as 7 billion years ago but haven’t been ripped apart due to their dark matter.
NASA Hosts Media Telecon About Latest Kepler Discoveries
NASA will host a news teleconference at 9 a.m. PDT (noon EDT) Thursday, July 23, to announce new discoveries made by its planet-hunting mission, the Kepler Space Telescope.
Cool summer boosts Arctic ice

Measurements from ESA’s CryoSat satellite show that the volume of Arctic sea ice increased by a third following the unusually cool summer of 2013. This new finding suggests that ice in the northern hemisphere is more sensitive to changes in summer melting than it is to winter cooling.
Inside Imhotep

Tour one of the most geologically diverse regions on Rosetta’s comet
Internet investor Yuri Milner joins with Berkeley in $100 million search for extraterrestrial intelligence
The Breakthrough Prize Foundation has already contracted with two of the world’s largest radio telescopes to devote major telescope time to searching for signals from other civilizations.
Satellite camera provides “EPIC” view of Earth
Data from the new NASA camera will be used to study the sunlit face of our planet.
The Argo’s hidden cargo
Space science image of the week: Intricate dust lanes are revealed in this far-infrared view of the constellation Carina
Dawn Maneuvering to Third Science Orbit
NASA’s Dawn spacecraft is using its ion propulsion system to descend to its third mapping orbit at Ceres, and all systems are operating well.
Week In Images
Our week through the lens: 13-17 July 2015
Preparing to build ESA’s Jupiter mission

Airbus Defence & Space in France has been selected as the prime industrial contractor for ESA’s Juice mission to Jupiter and its icy moons.
Gaia satellite and amateur astronomers spot one in a billion star
It is a type of a two-star system known as a cataclysmic variable, where one super dense white dwarf star is stealing gas from its companion star, effectively “cannibalizing” it.
Pluto’s icy plains, pits, and mountains take shape in Tombaugh Regio
New views of Tombaugh Regio, Pluto’s icy heart, provide still more evidence of a geologically rich world.
Earth from Space

Join us Friday, 17 July, at 10:00 CEST for the ‘Earth from Space’ video programme. This week features a satellite image of New York City
The mysterious “lakes” on Saturn’s moon Titan
A new study of Titan’s surface depressions suggests that it dissolves in a process similar to the creation of sinkholes on Earth.
A dark matter bridge in our cosmic neighborhood
This is the first time scientists have had observational verification that large filamentary superhighways are channeling dwarf galaxies across the cosmos along bridges of dark matter.
Full launch coverage

Watch the replay of the full MSG-4 launch coverage from Europe’s Spaceport in French Guiana on 15 July
Launch replay

Missed MSG-4 liftoff? Watch the replay of the launch from Europe’s Spaceport in French Guiana on 15 July
X-ray specs
Technology image of the week: ESA’s 7.5 tonne X-ray machine for seeing into space parts
Boundary conditions

Stunning shots of Rosetta’s comet reveal details of regional boundaries
MSG-4 liftoff

MSG-4 lifted off on an Ariane 5 launcher from Europe’s Spaceport in French Guiana at 21:24 GMT (23:42 CEST) on 15 July
MSG-4 in orbit

The last weather satellite in Europe’s highly successful Meteosat Second Generation series has been launched from Europe’s Spaceport in Kourou, French Guiana
Europe’s MSG-4 weather satellite delivered into orbit

The last weather satellite in Europe’s highly successful Meteosat Second Generation series lifted off on an Ariane 5 launcher at 21:42 GMT (23:42 CEST) on 15 July from Europe’s Spaceport in Kourou, French Guiana.
Jupiter twin discovered around solar twin
The existence of a Jupiter-mass planet in a Jupiter-like orbit around a Sun-like star opens the possibility that the system of exoplanets around this star may be similar to our solar system.
Pluto’s bright heart and Charon’s dark spot revealed in HD
New Horizons’ first high-resolution images of Pluto are giving astronomers insight into the dwarf world’s complex ice geology.
Discovery of a new class of particles at the LHC
The pentaquark represents a way to aggregate the fundamental constituents of ordinary protons and neutrons in a pattern that has never been observed before.
Pluto and Charon show craters, dark spots, and even signs of snow as New Horizons flies by
Mission scientists are thrilled with the data already, and they haven’t even received information from the flyby yet.
Watch MSG-4 launch

Follow the launch of Europe’s next weather satellite live on Wednesday night. MSG-4 is set for liftoff on an Ariane launcher in a 37-minute window starting at 21:42 GMT (23:42 CEST) on 15 July
iriss ground control
Human spaceflight and operations image of the week: ESA astronaut Andreas Mogensen visiting the Columbus Control Centre for the last time before his iriss mission
Live coverage: New Horizons’ historic Pluto flyby
Twenty-five years in the making, this close-up examination of the Pluto system represents the capstone of the first era of planet reconnaissance.
NASA’s three-billion-mile journey to Pluto reaches historic encounter
New Horizons made closest approach to the distant world at 7:50 a.m. EDT this morning.
Astronomy summer school radar observations shine new light on near-Earth asteroid
The images reveal an elongated object that is only 260 feet (80 meters) across at its widest point.
Europe advances with safer air travel

A safer airspace over Europe by 2018 is materialising as ESA’s Iris precursor project today began development with the unlocking of a further €7.6 million of funding.
MSG-4 launch timeline

On 15 July, a powerful Ariane launcher will loft Europe’s final Meteosat Second Generation weather satellite into orbit from Kourou, French Guiana. For the mission control team at ESA, liftoff will mark the end of months of careful preparations and the start of the mission’s first critical phase.
How big is Pluto? New Horizons settles decades-long debate
Based on the most recent data, Pluto is actually larger than previous conservative estimates, making it the largest of all known solar system objects beyond Neptune.
Preparing for launch
MSG-4 is set for launch on Wednesday night. Learn more about the European weather satellite with ESA TV
Rosetta: preparing for perihelion

Rosetta’s investigations of its comet are continuing as the mission teams count down the last month to perihelion – the closest point to the Sun along the comet’s orbit – when the comet’s activity is expected to be at its highest.
Pioneering Rosetta mission scientist Claudia Alexander dead at 56
As a research scientist, she inspired a generation, especially young women, to seek careers in science, technology, engineering and math.
Searing Sun seen in X-rays
NASA’s NuSTAR usually examines the mysteries of black holes, supernovae, and other high-energy objects, but it occasionally looks closer to home to study our star.
Fermi sees record flare from a black hole in a distant galaxy
One day 3C 279 was just one of many active galaxies scientists see, and the next day it was the brightest thing in the gamma-ray sky.
Here comes the Sun
Space Science Image of the Week: 20 SOHO snapshots of our Sun, one for each year of operations
Robots under test for oil and gas rig duty

A robot building on ESA’s ExoMars rover is bidding to win a place on oil and gas production rigs around the world, to work in remote and hazardous environments.
New Horizons’ last portrait of Pluto’s puzzling spots
While composition and color data still need to be downlinked, this hemisphere will be invisible to New Horizons during the July 14 flyby.
New image of Pluto: “Houston, we have geology”
Among the structures tentatively identified in this new image are what appear to be polygonal features, a complex band of terrain stretching east-northeast across the planet, and a complex region where bright terrains meet the dark terrains of the “wha…
NASA’s Curiosity Mars Rover Tracks Sunspots
Curiosity is monitoring sunspots on the side of the sun facing away from Earth, during weeks when sun-monitoring spacecraft can’t provide that information.
SMAP Team Investigating Radar Instrument Anomaly
Mission managers at NASA’s Jet Propulsion Laboratory, Pasadena, California, are assessing an anomaly with the radar instrument on NASA’s Soil Moisture Active Passive (SMAP) satellite observatory.
Week In Images
Our week through the lens: 6-10 July 2015
Pluto and Charon: New Horizons’ Dynamic Duo
The two worlds orbit the same gravitational point, but their similarities seem to end there.
Astronomy enthusiasts fear losing access to Mauna Kea permanently
A proposed rule change aimed at thwarting TMT protestors could block public access to some of the most pristine dark skies on Earth.
Swift reveals a black hole bull’s-eye
The satellite detected the start of a new outburst from V404 Cygni, where a black hole and a Sun-like star orbit each other.
Gigantic early black hole could upend evolutionary theory
Because the galaxy the 7-billion-solar-mass black hole was discovered in is fairly typical in size, the study calls into question previous assumptions on the development of galaxies.
Distant Black Hole Wave Twists Like Giant Whip
Magnetic waves from a black hole are set in motion as if a whip is being cracked.
NASA Finds Oceans Slowed Global Temperature Rise
A NASA study shows heat has been trapped in the Pacific and Indian oceans. The finding explains the recent slowdown in global temperature rise.
NASA Missions Have Their Eyes Peeled on Pluto
NASA’s New Horizons will have the support of other spacecraft during its historic Pluto flyby, with observations from their outposts across the solar system.
iriss for kids
ESA astronaut Andreas Mogensen narrates this animated story about his iriss mission to space starting September