Articles sur Comet

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Chelyabinsk meteor. Nikita Plekhanov/wikimedia

The five greatest balls of fire over Earth

A meteor exploding over the South Pacific on February 6 was the biggest since the Chelyabinsk meteor in 2013. Here are some other fiery visitors.
Rosetta deploys the Philae lander to comet 67P/Churyumov–Gerasimenko. ESA/ATG medialab; Comet image: ESA/Rosetta/Navcam

The Rosetta lander detects organic matter: the seeds of life?

Scientists working with data sent back by the now-slumbering Philae lander have announced the discovery of organic molecules on the comet 67P/Churyumov-Gerasimenko. Finding organic compounds on 67P’s surface…
Philae’s first panorama shows a 360 degree view around the point of final touchdown. Superimposed is a sketch of what the lander team believes is Philae’s configuration. ESA/Rosetta/Philae/CIVA

Sleep now for Rosetta’s comet probe after a bouncy landing

The European Space Agency’s (ESA) pioneering Rosetta mission to land on a comet has been wildly successful, but now it appears that part of its aim, the exploration of the surface by the little Philae…
Meteors streak outwards from the top of Orion’s head as seen in 2012 from central Victoria. Phil Hart

See one of the year’s best meteor showers, thanks to Halley’s comet

As Earth orbits the sun, it continually ploughs through dust and debris left behind by passing comets and asteroids. On any night of the year, a keen-eyed observer might see five, or even ten, meteors…
An artist’s concept of Comet Siding Spring (2013 A1) and Mars. NASA

Comet Siding Spring’s close encounter with Mars draws near

Astronomers world-wide are gearing up for what NASA calls a “once in a lifetime” event: the Comet Siding Spring will swing…
Earth was treated to a magnificent show during the Perseid meteor shower in 2010. Will the northern hemisphere get a similar show with the Camelopardalis shower on Saturday? ESO/S. Guisard

A night’s tale: will a new meteor shower light up northern skies?

Across North America, Europe and Japan, skywatchers will be out in force this weekend with high hopes of catching a never-before-seen meteor shower. Predicted to peak this Saturday, May 24, the shower…

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