StarTalk Radio 20 Apr 2018, 22:00 UTC This week, Chuck Nice asks Neil deGrasse Tyson fan-submitted questions on a range of topics we couldn’t answer in other episodes. Now extended with a session of “Neil’d It” – where Neil and Chuck comb Internet comments to see if the science is right. (Adult Language).
SpaceTime with Stuart Gary 20 Apr 2018, 12:33 UTC Astronomers are back in the dark about what dark matter might be, after new observations have shown that it’s not interacting with forces other than gravity after all. The findings add more mystery to the enigma of dark matter – an invisible substance which makes up over 80 percent of all the matter in the universe.
Hubblecast HD 19 Apr 2018, 14:00 UTC On 24 April 1990, Hubble was launched into space. To celebrate its 28th year in orbit, some of Hubble’s precious observation time was used to observe the colourful Lagoon Nebula. One of only two star-forming nebulae visible to the unaided eye, this spectacular stellar nursery is not quite the tranquil landscape its name suggests. This new Hubblecast explores the image in more detail and shows some of the delicate features of this cosmic lagoon.
SpaceTime with Stuart Gary 18 Apr 2018, 11:52 UTC Astronomers peering deep into the violent heart of a supernova debris field have discovered a slowly expanding torus shaped cloud of oxygen and neon surrounding a young neutron star. The findings provide new insights into the processes involved in the explosive deaths of massive stars through core collapse supernovae.
StarDate Online 16 Apr 2018, 05:00 UTC The word “planet” comes from a Greek word that means “wanderer.” The title was bestowed because, over time, each of the bright planets moves against the background of “fixed” stars.Occasionally, though, a planet stops wandering and stands still against that background — it’s stationary.
StarDate Online 14 Apr 2018, 05:00 UTC Many stars have beautiful, even romantic names, such as Antares and Aldebaran, Vega and Altair. But some stars have names that aren’t romantic at all. Instead, they’re downright funny. Two examples shine faintly in the southern constellation Lupus, the wolf. Many star names incorporate the genitive case of their constellation. That’s why the brightest star in Centaurus is not Alpha Centaurus, but instead Alpha Centauri.