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Great interview with Villanova University astronomer Ed Guinan, who explains today’s news of the latest paper on why Betelgeuse experienced such a deep dimming this past Fall and Winter. We cover a lot of territory from how Gene Roddenberry chose the name Guinan for the Whoopi Goldberg character on Star Trek’s Next Generation to the history behind the pole star’s mysterious brightening; to the Dog Star Sirius; to why life might still be possible around red dwarfs; to our Sun’s longterm future. Please listen!


In a stroke of serendipity during a wide-ranging podcast interview, Villanova University astronomer Edward Guinan explains the paper behind today’s news flap about the red supergiant star’s inexplicable dimming. The most recent explanation is that dust generated from cooling plasma spewed forth from the massive star’s interior caused Betelgeuse to appear more dim than usual. While Guinan acknowledges this scenario is a possibility, he remains skeptical. Please listen to this candid and entertaining episode!

A world first. New footage from Mars rendered in stunning 4K resolution.

Although the cameras are high quality, the rate at which the rovers can send data back to earth is the biggest challenge. Curiosity can only send data directly back to earth at 32 kilo-bits per second.

Instead, when the rover can connect to the Mars Reconnaissance Orbiter, we get more favourable speeds of 2 Megabytes per second.

However, this link is only available for about 8 minutes each Sol, or Martian day.

As you would expect, sending HD video at these speeds would take a long long time. As nothing really moves on Mars, it makes more sense to take and send back images.

Credits — NASA, ElderFoxDocumentaries.

#MARS #Marsin4K #MARSinHD #MARSVideo #OccupyMars #MarsSurface #NASA

Next week, NASA’s OSIRIS-REx Asteroid Sample Return Mission will practice touching asteroid Bennu one last time before its big moment. The 4-hour excursion will bring the spacecraft to just 131 ft (40 m) above Bennu.

Here’s a preview of the rehearsal: https://go.nasa.gov/30zVOgR