NASA Telescopes Help Uncover Early Construction Phase Of Giant Galaxy
Wed, 27 Aug 2014 13:00:00 -0400
The birth of massive galaxies, according to galaxy formation theories, begins with
the buildup of a dense, compact core that is ablaze with the glow of millions of
newly formed stars. Evidence of this early construction phase, however, has
eluded astronomers until now. Astronomers identified a dense galactic core,
dubbed "Sparky," using a combination of data from Hubble and Spitzer, other space telescopes, and the W.M. Keck Observatory in Hawaii. Hubble photographed the
emerging galaxy as it looked 11 billion years ago, just 3 billion years after the
birth of our universe in the big bang.
Integral catches dead star exploding in a blaze of glory - Read more >
Wed, 27 Aug 2014 19:00:00 +0200
Astronomers using ESA’s Integral gamma-ray observatory have demonstrated beyond doubt that dead stars known as white dwarfs can reignite and explode as supernovae. The finding came after the unique signature of gamma rays from the radioactive elements created in one of these explosions was captured for the first time.
Rosetta: Landing site search narrows - Read more >
Mon, 25 Aug 2014 15:00:00 +0200
Using detailed information collected by ESA’s Rosetta spacecraft during its first two weeks at Comet 67P/Churyumov-Gerasimenko, five locations have been identified as candidate sites to set down the Philae lander in November – the first time a landing on a comet has ever been attempted.
Rosetta arrives - Read more >
Thu, 07 Aug 2014 17:45:00 +0200
Video highlights from the event at ESA's mission control centre during Rosetta's arrival at comet 67P/C-G on 6 August 2014
NASA's Hubble Finds Supernova Star System Linked to Potential 'Zombie Star'
Wed, 06 Aug 2014 13:00:00 -0400
Supernovae are the most powerful stellar explosions in the universe. Some of
them are produced by the detonation of a white dwarf, the stripped-down core of
an ordinary star at the end of its life. But 12 years ago, astronomers began noticing weak stellar blasts, a kind of mini-supernova. When
one such explosion occurred in the galaxy NGC 1309, astronomers looking
through Hubble archival images found for the first time the star system that
produced the supernova blast of a white dwarf.
Rosetta arrives at comet destination - Read more >
Wed, 06 Aug 2014 11:40:00 +0200
After a decade-long journey chasing its target, ESA’s Rosetta has today become the first spacecraft to rendezvous with a comet, opening a new chapter in Solar System exploration.
Rosetta rendezvous - Read more >
Tue, 05 Aug 2014 11:25:00 +0200
Watch as ESA's Rosetta spacecraft makes its historic rendezvous with a comet after a decade-long journey through space. Livestream from ESA's operations centre restarts at 11:00 GMT (13:00 CEST) on 6 August
Rosetta takes comet’s temperature - Read more >
Fri, 01 Aug 2014 14:00:00 +0200
ESA’s Rosetta spacecraft has made its first temperature measurements of its target comet, finding that it is too hot to be covered in ice and must instead have a dark, dusty crust.
Hubble Shows Farthest Lensing Galaxy Yields Clues to Early Universe
Thu, 31 Jul 2014 10:00:00 -0400
Astronomers using NASA's Hubble Space Telescope have unexpectedly discovered the
most distant cosmic magnifying glass yet, produced by a monster elliptical galaxy. The galaxy, seen here as it looked 9.6 billion years ago, is so massive that its gravity bends, magnifies,
and distorts light from objects behind it, a phenomenon called gravitational lensing. In
the Hubble image, the galaxy is the red object in the enlarged view at left.
Gaia: ‘Go’ for science - Read more >
Tue, 29 Jul 2014 14:30:00 +0200
Following extensive in-orbit commissioning and several unexpected challenges, ESA’s billion-star surveyor, Gaia, is now ready to begin its science mission.
Venus Express: up above the clouds so high - Read more >
Mon, 28 Jul 2014 17:30:00 +0200
ESA’s Venus Express spacecraft has climbed to a new orbit following its daring aerobraking experiment, and will now resume observations of this fascinating planet for at least a few more months.
Hubble Finds Three Surprisingly Dry Exoplanets
Thu, 24 Jul 2014 08:00:00 -0400
Astronomers using the Hubble Space Telescope have gone looking for water
vapor in the atmospheres of three planets orbiting stars similar to the
Sun and have come up nearly dry. The planets spectroscopically surveyed
have only one-tenth to one one-thousandth the amount of water predicted by
standard planet-formation theories. The planets are not habitable because
they are gaseous and are as big as Jupiter. They lie so much closer to their
host star than Jupiter is to our Sun, so their atmospheres are seething
between 1,500 and 4,000 degrees Fahrenheit. Nevertheless, this result suggests
that some percentage of Earth-size exoplanets may be more deficient in water
than predicted. And, water is a necessary prerequisite for life as we know it.
The search for water-bearing terrestrial worlds may be more challenging than
thought for future space telescopes. And, scientists may have to revisit their
theories of planet formation.
Call for Media: Rosetta’s comet rendezvous - Read more >
Fri, 18 Jul 2014 12:20:00 +0200
On 6 August, after a decade-long journey through space, ESA’s Rosetta will become the first spacecraft in history to rendezvous with a comet. Members of the media are invited to join ESA at its European Space Operations Centre in Darmstadt, Germany, to mark this momentous occasion.
Venus Express rises again - Read more >
Fri, 11 Jul 2014 16:00:00 +0200
After a month surfing in and out of the atmosphere of Venus down to just 130 km from the planet’s surface, ESA’s Venus Express is about to embark on a 15 day climb up to the lofty heights of 460 km.
CHEOPS on target - Read more >
Fri, 11 Jul 2014 12:29:00 +0200
The Characterising ExoPlanet Satellite, ESA's first small Science Programme mission, is ready for construction
Hubble Sees Spiral Bridge of Young Stars Between Two Ancient Galaxies
Thu, 10 Jul 2014 10:00:00 -0400
It seems like our compulsive universe can be downright capricious when it comes
to making oddball-looking things in the cosmos. The latest surprise to Hubble
astronomers is a 100,000-light-year-long structure that looks like a string of
pearls twisted into a corkscrew shape. This Slinky-like structure forms a bridge between two giant elliptical galaxies that
are colliding. The "pearls" on the Slinky are superclusters of blazing, blue-white,
newly born stars. The whole assembly, which looks like a tug-of-war, must result
from the gravitational tidal forces present in the collision.
Hubble to Proceed with Full Search for New Horizons Targets
Tue, 01 Jul 2014 14:00:00 -0400
Planetary scientists have successfully used the Hubble Space Telescope to
boldly look out to the far frontier of the solar system to find suitable targets for
NASA's New Horizons mission to Pluto. After the marathon probe zooms past
Pluto in July 2015, it will travel across the Kuiper Belt a vast rim of primitive ice
bodies left over from the birth of our solar system 4.6 billion years ago. If NASA
approves, the probe could be redirected to fly to a Kuiper Belt object (KBO) and
photograph it up close.
Swiftly Moving Gas Streamer Eclipses Supermassive Black Hole
Thu, 19 Jun 2014 14:00:00 -0400
Active galaxies host supermassive black holes in their cores. The intense gravity of the black hole creates a turbulent cauldron of extreme physics. These galaxies, such as NGC 5548 in this study, are too far away for the plasma fireworks to be directly imaged. Therefore astronomers use X-ray and ultraviolet spectroscopy to infer what is happening near the black hole. The new twist is the detection of a clumpy stream of gas that has swept in front of the black hole, blocking its radiation. This deep look into a black hole's environment yields clues to the behavior of active galaxies.
Hubble Finds That Dwarf Galaxies Formed More Than Their Fair Share of the Universe's Stars
Thu, 19 Jun 2014 08:00:00 -0400
They may be little, but they pack a big star-forming punch. Hubble astronomers
have found that dwarf galaxies in the young universe were responsible for an
"early wave" of star formation not long after the big bang. The galaxies churned
out stars at a furiously fast rate, far above the "normal" star formation
expected of galaxies. Understanding the link between a galaxy's mass and its
star-forming activity helps to assemble a consistent picture of events in the
NASA's Hubble to Begin Search Beyond Pluto for a New Horizons Mission Target
Mon, 16 Jun 2014 11:00:00 -0400
The Kuiper Belt is the final frontier of our solar system, and also the vastest.
Stretching from 3 to 5 billion miles from the Sun, it contains myriad primitive icy
bodies left over from the birth of our solar system 4.6 billion years ago. After
passing the dwarf planet Pluto in July 2015, NASA's New Horizons space probe will
hurtle deep into the Kuiper Belt at nearly 35,000 miles per hour. The Hubble
Space Telescope is being used to search for a suitable Kuiper Belt object that
New Horizons could pay a visit to. It would be our first and perhaps last look at
such a remote relic from the distant past. The search is very challenging even for
Hubble's sharp vision. It has to find something the size of Manhattan Island, as
black as charcoal, and embedded against a snowstorm of background stars.
Hubble Team Unveils Most Colorful View of Universe Captured by Space Telescope
Tue, 03 Jun 2014 14:15:00 -0400
Astronomers using the Hubble Space Telescope have assembled a comprehensive picture of the evolving universe among the most colorful deep space images ever captured by the 24-year-old telescope. This study, which includes
ultraviolet light, provides the missing link in star formation.
Unveiling Venus - Read more >
Fri, 16 May 2014 15:00:00 +0200
Highlights from ESA’s Venus Express, following end of routine science observations after eight years orbiting the veiled planet
Ten years imaging Mars - Read more >
Tue, 14 Jan 2014 14:08:00 +0100
Travel across the dramatic flood plains of Mars to celebrate ten years of imaging the Red Planet with Mars Express