Water ice deposits have been found in cliff-like structures known as ‘scarps’ at eight different sites on Mars, using the HiRISE camera on NASA’s Mars Reconnaissance Orbiter.
It has previously been shown that there is shallow ground ice under roughly a third of the Martian surface, detected with spectrometers and ground-penetrating radar from orbiting spacecraft. The exposed faces of these scarps provide us with a cross-sectional view though this ice, which is over 100 metres thick in some places. Continue reading Cliffs of Ice Found on Mars→
On 22 February 2017, astronomers announced that the faint Jupiter-sized ultra-cool red dwarf star TRAPPIST-1, in the constellation of Aquarius, is host to seven Earth-sized planets, all of which are within the stars’ ‘habitable zone’, where it is possible that liquid water could be present.
The first ever confirmed detection of gravitational waves has been announced by the Laser Interferometer Gravitational-wave Observatory (LIGO) at a press conference held in Washington DC at 10:30 EST on Thurday, 11 February 2016 .
LIGO’s detection of ripples in the fabric of spacetime has been heralded as one of the scientific breakthroughs of the century and promises to mark the dawn of a new science of gravitational-wave astronomy. Continue reading Gravitational Waves Detected→