How can a “big rip” tear the Universe apart? What does that mean for existence itself? Is it going to happen, and what are we doing to find out? I discuss these questions and more in today’s Ask a Spaceman!
Dec 1st: The Universe is (Still) Trying to Murder Us
In today’s episode, we’re going to look at everything from how past Earth couldn’t support photosynthesis because the days were just too short, to current Earth letting us get hit by more Cosmic Rays prior to Earthquakes going off, and to supernovae threatening our world while alien stars eat other planets.
Aug 22nd: Only So Much
Jul 21st: How Many Stars In The Universe?
Today #365DaysOfAstro explains how many stars there are. How many can you see with your eyes, with binoculars or a small telescope? How many stars in the Milky Way? How many in the entire Universe?
Jun 21st: Why the Universe Exists
The biggest question of them all…why the Universe exists? Find the answers along with other questions on today’s @AwesomeAstroPod at #365DaysOfAstro
May 6th: Will the Universe Run Out Of Energy?
It seems like the good times will go on forever, so feel free to keep on wasting energy. But entropy is patient, and eventually, it’ll make sure there’s no usable energy left in the Universe.
Mar 1st: The Universe is Broken. Again
Today’s @AwesomeAstroPod talks about latest JWST findings that may have broken cosmology and changed everything we thought we knew about the history of the universe. Also March Sky Guide!
Feb 21st: Does the Universe Rotate?
How do we know that the universe doesn’t rotate? Why would it matter if it did? What does all this have to do with time travel?
Feb 17th: Missing Baryonic Mass in the Universe… Found!
Astronomers have finally solved one of the outstanding mysteries in cosmology. Forget about all the dark matter and dark energy, where’s all the missing regular mass in the Universe? This has been called the “missing baryon problem”.
Nov 24th: How Big is the Universe?
A simple explanation of the size of the universe, how the universe grew so big and how big it will get.