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https://stardate.org/radio/program/2018-04-23: Moon and Regulus
StarDate Online

Direct link Moon and Regulus

23 Apr 2018, 05:00 UTC As the Sun sets, its lingering light creates a zone between daylight and darkness: the twilight zone. It typically lasts for about an hour, as Earth’s atmosphere scatters some sunlight back into the region where the Sun has already set.
tag:soundcloud,2010:tracks/432786486: Extended Classic – Cosmic Queries The Random Edition
StarTalk Radio

Direct link Extended Classic – Cosmic Queries The Random Edition

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).
http://www.nasa.gov/mediacast/this-week-nasa-april-20-2018: This Week @NASA, April 20, 2018
NASACast: This Week @NASA Audio

Direct link This Week @NASA, April 20, 2018

20 Apr 2018, 14:04 UTC A new NASA Administrator is confirmed … Our next planet-hunting mission launches … And the first 3-D microscopic image on the space station – a few of the stories to tell you about – This Week at NASA
tag:audioboom.com,2018-04-20:/posts/6820787: 31: Dark Matter Keeps Its Secrets - SpaceTime with Stuart Gary Series 21 Episode 31
SpaceTime with Stuart Gary

Direct link 31: Dark Matter Keeps Its Secrets - SpaceTime with Stuart Gary Series 21 Episode 31

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.
http://www.spacetelescope.org/videos/heic1808a/: Hubblecast 109: Diving into the Lagoon Nebula
Hubblecast HD

Direct link Hubblecast 109: Diving into the Lagoon Nebula

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.
tag:audioboom.com,2018-04-18:/posts/6815377: 30: A glimpse into the heart of an exploding star - SpaceTime with Stuart Gary Series 21 Episode 30
SpaceTime with Stuart Gary

Direct link 30: A glimpse into the heart of an exploding star - SpaceTime with Stuart Gary Series 21 Episode 30

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.
https://stardate.org/radio/program/2018-04-17: Moon and Venus
StarDate Online

Direct link Moon and Venus

17 Apr 2018, 05:00 UTC The clouds on Venus are beautiful to look at, but you wouldn’t want to fly through them. That’s because they’re made of sulfuric acid — a compound that can eat through just about anything.
https://stardate.org/radio/program/2018-04-16: Stationary Saturn
StarDate Online

Direct link Stationary Saturn

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.
https://stardate.org/radio/program/2018-04-14: ‘Loopy’ Names
StarDate Online

Direct link ‘Loopy’ Names

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.
http://www.nasa.gov/mediacast/this-week-nasa-april-13-2018: This Week @NASA, April 13, 2018
NASACast: This Week @NASA Audio

Direct link This Week @NASA, April 13, 2018

13 Apr 2018, 17:46 UTC A challenge for the next generation of explorers … An eye-popping virtual tour of the Moon … And introducing the public to a universe of discovery – a few of the stories to tell you about – This Week at NASA!

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