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ESA

NGC 7714: Starburst after Galaxy Collision

Is this galaxy jumping through a giant ring of stars? Probably not. Although the precise dynamics behind the featured image is yet unclear, what is clear is that the pictured galaxy, NGC 7714, has been stretched and distorted by a recent collision with a... Continue Reading →

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Unexpected periodic flares may shed light on black hole accretion

ESA’s X-ray space telescope XMM-Newton has detected never-before-seen periodic flares of X-ray radiation coming from a distant galaxy that could help explain some enigmatic behaviours of active black holes.  XMM-Newton, the most powerful X-ray observatory, discovered some mysterious flashes from... Continue Reading →

Spiral Disk around a Black Hole

What would it look like to orbit a black hole? Many black holes are surrounded by swirling pools of gas known as accretion disks. These disks can be extremely hot, and much of the orbiting gas will eventually fall through the black hole'sevent... Continue Reading →

Hubble’s Portrait of Star’s Gaseous Glow

Although it looks more like an entity seen through a microscope than a telescope, this rounded object, named NGC 2022, is certainly not algae or tiny, blobby jellyfish. Instead, it is a vast orb of gas in space, cast off... Continue Reading →

INSIDE AEOLUS

ESA’s Aeolus satellite, which carries the world’s first space Doppler wind lidar, has been delivering high-quality global measurements of Earth’s wind since it was launched almost a year ago. However, part of the instrument, the laser transmitter, has been slowly... Continue Reading →

M82: Galaxy with a Supergalactic Wind

Why is the Cigar Galaxy billowing red smoke? M82, as this starburst galaxy is also known, was stirred up by a recent pass near large spiral galaxy M81. This doesn't fully explain the source of the red-glowing outwardly expanding gas and dust, however. Evidence indicates that this gas and dust is being... Continue Reading →

Angelic Halo Orbit Chosen For Humankind’s First Lunar Outpost

Like the International Space Station, the Gateway will be a permanent and changeable human outpost. Instead of circling our planet however, it will orbit the Moon, acting as a base for astronauts and robots exploring the lunar surface. The Gateway concept Like... Continue Reading →

ESA’S FLEET OF SOLAR SYSTEM EXPLORERS

ESA's science missions have been exploring our planetary neighbourhood to tackle the big questions that help to put Earth in context, to understand a planet's interaction with its host star, and to search for habitable worlds. With more and more... Continue Reading →

3D Earth in the making

A thorough understanding of the ‘solid Earth’ system is essential for deciphering the links between processes occurring deep inside Earth and those occurring nearer the surface that lead to seismic activity such as earthquakes and volcanic eruptions, the rise of mountains... Continue Reading →

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