Mars Orbiter Beams Back Images of Comet's Tiny Nucleus
The High-Resolution Imaging Science Experiment (HiRISE) camera on board NASA’s Mars Reconnaissance Orbiter (MRO) has become the first instrument orbiting Mars to beam back images of comet Siding Spring’s nucleus and coma. And by default, it has also become the first ever mission to photograph a long-period comet’s pristine nucleus on its first foray into the inner solar system.
Paralysed man walks again after cell transplant
A paralysed man has been able to walk again after a pioneering therapy that involved transplanting cells from his nasal cavity into his spinal cord.
Orionid meteor shower tonight: how to get the best view
The Orionid meteor shower peaks in the early hours of Tuesday, with meteors flitting across the sky at an average pace of about one every three to four minutes.