European Space Agency

Rosetta's big day in the sun

ESA's Rosetta today witnessed Comet 67P/Churyumov–Gerasimenko making its closest approach to the sun. The exact moment of perihelion occurred at 02:03 GMT this morning when the comet came within 186 million km of the sun.

dateAug 14, 2015 in Space Exploration
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Do comet fractures drive surface evolution?

Extreme thermal stresses experienced by a comet as it orbits around the Sun could explain the extensive fracturing thought to drive its long-term surface erosion, say Rosetta scientists analysing high-resolution images of ...

dateAug 21, 2015 in Space Exploration
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Born-again planetary nebula

Beneath the vivid hues of this eye-shaped cloud, named Abell 78, a tale of stellar life and death is unfolding. At the centre of the nebula, a dying star – not unlike our Sun – which shed its outer layers on its way to ...

dateJul 28, 2015 in Astronomy
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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 ...

dateJul 31, 2015 in Space Exploration
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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.

dateJul 28, 2015 in Space Exploration
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Secret of Rosetta's cool

These might resemble venetian window blinds, but they are actually a key technology enabling ESA's Rosetta spacecraft to travel safely from the Sun-warmed inner Solar System to the frigid expanse of the Asteroid Belt, then ...

dateAug 20, 2015 in Space Exploration
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