News tagged with comet

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In search of time travelers

(Phys.org) —It started over a poker game. Astrophysicist Robert Nemiroff and his students were playing cards (for chips) last summer, chatting about Facebook. They wondered: If there were time travelers ...

Jan 06, 2014
2.5 / 5 (11) 4 | with audio podcast

Will comet ISON survive its brush with the Sun?

(Phys.org) —The much-anticipated close approach of comet ISON to the Sun this November may be spectacular as viewed from Earth, but it's unlikely to spell the end of the comet, according to a numerical-simulation study ...

Oct 11, 2013
4.8 / 5 (5) 1 | with audio podcast

The dual personality of comet 67P/C-G

(Phys.org) —This week's images of comet 67P/Churyumov-Gerasimenko reveal an extraordinarily irregular shape. We had hints of that in last week's images and in the unscheduled previews that were seen a few ...

Jul 18, 2014
4.8 / 5 (5) 2

PanSTARRS K1, the comet that keeps going

Thank you K1 PanSTARRS for hanging in there! Some comets crumble and fade away. Others linger a few months and move on. But after looping across the night sky for more than a year, this one is nowhere near ...

Sep 30, 2014
4.8 / 5 (5) 0

Five questions about the Rosetta mission

On November 12, the Rosetta spacecraft's Philae lander is due to land on the surface of a comet. As a space scientist working with those who have instruments on board, I can't wait. I met up with some of ...

Nov 07, 2014
4.6 / 5 (5) 1

Actin cytonauts at play in the cell

(Phys.org) —Actin "comets" are scaffolds of polymer that various bacteria and viruses construct within cells. Party-crashers, like Listeria or Shigella bacteria, are able to seed structures using special ...

Jan 21, 2014 report
4.4 / 5 (5) 0 | with audio podcast