News tagged with comet

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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

Comet Pan-STARRS: How bright will it get?

Early next year, a comet will come fairly close to Earth and the Sun—traveling within the orbit of Mercury—and it has the potential to be visible to the naked eye. Amateur and professional astronomers ...

Sep 06, 2012
4.2 / 5 (5) 0

Herschel spots comet massacre around nearby star

(Phys.org) -- ESA’s Herschel Space Observatory has studied the dusty belt around the nearby star Fomalhaut. The dust appears to be coming from collisions that destroy up to thousands of icy comets every ...

Apr 12, 2012
5 / 5 (4) 4 | with audio podcast

Viewing crescent Mars

(Phys.org)—The sight of the crescent Moon hanging in the sky above Earth is a familiar one, but this image taken by ESA's Rosetta spacecraft as it passed by the Red Planet in February 2007 captures the ...

Oct 02, 2012
5 / 5 (4) 0

Year three: NASA SDO mission highlights

On Feb. 11, 2010, NASA launched an unprecedented solar observatory into space. NASA's Solar Dynamics Observatory (SDO) flew up on an Atlas V rocket, carrying instruments that scientists hoped would revolutionize ...

Feb 13, 2013
5 / 5 (4) 0

What happened to comet ISON?

Astronomers have long known that some comets like it hot. Several of the greatest comets in history have flown close to the sun, puffing themselves up with solar heat, before they became naked-eye wonders ...

Dec 05, 2013
4 / 5 (5) 0 | with audio podcast