NASA?s Mars Odyssey spacecraft has reached its final mapping orbit after three months of aerobraking manoeuvres around the Red Planet. At 2014 GMT (5:14pm EST) Odyssey fired its thrusters for 25 seconds and decreased its velocity to maintain an orbit which varies between 387km and 450km above the surface of Mars. Two scientific instruments on the spacecraft have already begun collecting data about the composition of the planet?s surface.
Like a performer preparing for their big finale, a distant star is shedding its outer…
For a little over a month now, the Earth has been joined by a new…
Despite decades of study, black holes are still one of the most puzzling objects in…
74 million kilometres is a huge distance from which to observe something. But 74 million…
Astronomers have only been aware of fast radio bursts for about two decades. These are…
How do you weigh one of the largest objects in the entire universe? Very carefully,…