Our series on Universe weirdness continues, this time we learn how astronomers are struggling to make sense of the age of the Universe.
Oct 21st: Weird Issues: The Age of the Universe
Astronomy Cast Archive
Oct 14th: Weird Issues: The Expansion Rate of the Universe
Astronomers have been trying to accurately measure the expansion rate of the Universe. It’s been tough to nail down, and now astronomers are starting to figure out why.
Oct 7th: Weird Issues: How Do (or Don’t) Planets Form?
Weird Issues: How Do (or Don’t) Planets Form? Hot jupiters? Pulsars with planets? We’re now decades into this planets discovery & the Universe is continuing to surprise us. #365DaysOfAstro
Sep 30th: Weird Issues: Why We Don’t Know the Age of Saturn’s Rings
How old are Saturn’s rings? They could be brand new, or they could be as ancient as the Solar System itself. more at #365DaysOfAstro
Sep 23rd: Asteroids: Rubble Piles of the Solar System
Thanks to Hayabusa 2 & OSIRIS-REx, we can learn more about this piles of rubble. A fascinating piles of rubble. Let’s talk about what we’ve learned so far. #365DaysOfAstro
Sep 16th: Reusable Rocket Revolution
We took a hiatus this summer, but SpaceX sure didn’t, with the tests of the Starhopper prototype. Today we’re going to talk about the revolution in reusable rocketry and quest to build a fully reusable two-stage rocket.
Sep 9th: Decelerating Black Holes, Earth-Sun Tidal Lock, and the Crushing Gravity of Dark Matter
This week we wonder if you can made a black hole by accelerating a mass, but then can you un-make it again? Will the Earth ever be tidally locked to the Sun? And can dark matter crush an unsuspecting space ship?
Sep 2nd: Questions Show: Multiple Big Bangs, Satellite Collisions and the Size of the Universe
This week we wonder if the Universe is going to collapse and then expand again, how satellites can have such different velocities, and the size of the observable Universe.
Aug 26th: Questions Show: The Source of Atmospheres, the Vanishing Moon, and a Glow After Sunset
How do planets get their atmospheres? What would happen to the Earth if the Moon just disappeared? And what’s that strange glow we see after sunset?
Aug 19th: Questions Show: Shooting Lasers at the Moon and Losing Contact with Rovers
This week we find out how hard it is to hit the Moon with a laser, & if scientists lose contact with the Mars rovers when they go behind the Sun.