StarDate Online 8 Feb 2018, 06:00 UTC he ancient rivalry between Mars and Antares comes from their resemblance. Mars reminded ancient skywatchers of the color of blood, so they named the planet for the god of war: Ares in Greece, and Mars in Rome. Since the heart of the scorpion looked so much like Mars, it was called Ant-Ares, which means rival of Ares or, in the Roman version, rival of Mars.
NASACast Audio 7 Feb 2018, 14:51 UTC Does art imitate life or does life imitate art? In the season one finale of Gravity Assist, NASA’s Jim Green and bestselling author Andy Weir explore the fascinating intersection of science and science fiction. Green and Weir delve into biggest surprises about Mars and the Moon, what every aspiring writer needs to know, and how “The Martian” provided a powerful gravity assist for young readers.
SpaceTime with Stuart Gary 7 Feb 2018, 09:02 UTC Astronomers have discovered evidence confirming that the outer halo of the Milky Way contains stars stolen from neighbouring dwarf galaxies. The new findings support the idea of galactic cannibalism in which big galaxies grow bigger by merging or consuming smaller galaxies.
StarDate Online 6 Feb 2018, 06:00 UTC The surface of Earth is constantly changing. On small scales, the changes are caused by wind, rain, and flowing water. On a large scale, though, they’re caused by the motions of Earth’s crust. New crust is created on the ocean floor, where molten rock pushes up from the mantle, the layer below the crust. And old crust disappears as one plate plunges below another, pushing its rock back into the mantle. A similar process may be at work on Europa, one of the big moons of Jupiter. In that case, though, the plates are made of ice.
StarDate Online 5 Feb 2018, 06:00 UTC Comets are the most unpredictable of astronomical objects. They can delight, they can disappoint, they can vanish with a puff of dust. On rare occasions, though, they can be great — brilliant spectacles that are visible even in daylight. One such over-performer was first reported 175 years ago today: the Great Comet of 1843.
The Star Spot 5 Feb 2018, 02:00 UTC The one thing we thought we knew about fast radio blasts was that these mysterious one-off phenomena must be associated with some of the most cataclysmic events in the universe. Then everything changed with last month’s announcement of the first ever detection of a source of repeating fast radio bursts. Today we’re joined at The Star Spot by co-discover Jason Hessels to rule on an important question: are scientists back to the drawing board or did they just achieve a breakthrough in our efforts to unlock this puzzle.
ESOcast 2 Feb 2018, 11:00 UTC In ESOcast 149 we hear from some of ESO’s current students about their experience at ESO, and they offer their advice to those considering following in their footsteps. ESO’s Studentship programme provides a valuable opportunity for astronomers of the future to gain experience at the most productive ground-based astronomical observatory in the world. PhD students work alongside senior astronomers and engineers in a creative, collaborative and truly international environment, in which their careers are encouraged to blossom.
NASACast Audio 31 Jan 2018, 18:15 UTC After making history by flying by Pluto in 2015, NASA’s New Horizons spacecraft is speeding toward a New Year’s Day 2019 flyby of a mysterious world in the outer realm of the solar system. In this episode of Gravity Assist, Jim Green talks with New Horizons Principal Investigator Alan Stern about what we’ve learned about Kuiper Belt object 2014 MU69 and the remarkable story of how -- against all odds -- the New Horizons team captured MU69’s fleeting shadow on Earth as the object passed in front of a distant star.