Swarm trio becomes a quartet

With the aim of making the best possible use of existing satellites, ESA and Canada have made a deal that turns Swarm into a four-satellite mission to shed even more light on space weather and features such as the aurora ...

Image: Obscured Sirius reveals Gaia 1 cluster

If you gazed at the night sky over the past few weeks, it is possible that you stumbled upon a very bright star near the Orion constellation. This is Sirius, the brightest star of the entire night sky, which is visible from ...

Impressive Geminid Meteors to Peak on December 13–14

If it's clear Wednesday night and Thursday before dawn, keep a lookout high overhead for the "shooting stars" of the Geminid meteor shower. That's the peak night for this annual display.

Image: Atlas V lifts-off with TDRS-M

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT.

Hidden red dwarf discovered in dust of giant star

CW Leonis, a red giant star 500 times the size of the sun is located in the Leo constellation 300 light years away. This is an evolving star that is ejecting significant amounts of dust forming an enveloping cloud many times ...

Video: The future of the Orion constellation

Stars are not motionless in the sky: their positions change continuously as they move through our Galaxy, the Milky Way. These motions, too slow to be appreciated with the naked eye over a human lifetime, can be captured ...

Image: Etna erupts

This image of the lava flowing from Mount Etna in Sicily, Italy, was captured today at 10:45 GMT (11:45 CET) by the Copernicus Sentinel-2A satellite.

Watch the bright star Regulus hide behind the full moon

Across Australia, on the evening of February 11/12, the full moon will travel directly in front of the bright star Regulus. For about an hour, the star will be hidden from view as the moon passes by.

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