European Space Agency

Planck: Gravitational waves remain elusive

Despite earlier reports of a possible detection, a joint analysis of data from ESA's Planck satellite and the ground-based BICEP2 and Keck Array experiments has found no conclusive evidence of primordial ...

14 hours ago
4.5 / 5 (12) 10

Mysteries in Nili Fossae

These new images from the high-resolution stereo camera on ESA's Mars Express show Nili Fossae, one of the most enticing regions on Mars. This 'graben system' lies northeast of the volcanic region of Syrtis ...

Jan 26, 2015
5 / 5 (4) 0

Image: Jupiter's cratered moon, Callisto

The speckled object depicted here is Callisto, Jupiter's second largest moon. This image was taken in May 2001 by NASA's Galileo spacecraft, which studied Jupiter and its moons from 1995 until 2003.

Jan 26, 2015
4.9 / 5 (8) 1

Image: Striking lightning from space

Lightning illuminates the area it strikes on Earth but the flash can be seen from space, too. This image was taken from 400 km above Earth in 2012 by an astronaut on the International Space Station travelling ...

Jan 27, 2015
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