Deadline closing for names to fly on NASA's next Mars rover

It's the final boarding call for you to stow your name on NASA's Mars 2020 rover before it launches to the Red Planet. The Sept. 30 deadline for NASA's "Send Your Name to Mars" campaign gives the mission enough time to stencil ...

Could we intercept interstellar comet C/2019 Q4 Borisov?

When 'Oumuamua passed through our solar system two years ago, it set off a flurry of excitement in the astronomical community. Here was the first-ever interstellar object that be observed by human trackers, and the mysteries ...

Comet's collapsing cliffs and bouncing boulders

Scientists analyzing the treasure trove of images taken by ESA's Rosetta mission have turned up more evidence for curious bouncing boulders and dramatic cliff collapses.

'Snow-cannon' Enceladus shines up Saturn's super-reflector moons

Radar observations of Saturn's moons, Mimas, Enceladus and Tethys, show that Enceladus is acting as a "snow-cannon," coating itself and its neighbors with fresh water-ice particles to make them dazzlingly reflective. The ...

AIDA collaboration highlights case for planetary defence

Surprising results from recent asteroid missions have highlighted the importance of testing planetary defence strategies in space, according to scientists participating in the joint ESA/NASA Asteroid Impact and Deflection ...

Stony-iron meteor caused August impact flash at Jupiter

Analysis of a bright flash in Jupiter's atmosphere observed by an amateur astronomer in August 2019 has revealed that the likely cause was a small asteroid with a density typical of stony-iron meteors. The impact is estimated ...

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