How did Einstein develop General Relativity? How does gravity do what it does?
Apr 3rd: Seriously, what is gravity?
Ask A Spaceman Archive
Mar 20th: Iceland Question Bonanza! Subtitle
Where did all the monopoles go? Do other planets have auroras? Can binary stars host planets?
Mar 6th: Why is Iceland so warm?
What makes Iceland so warm despite its high latitude? What powers everything from glaciers to geysers?
Feb 20th: Why are Small Stars Such a Big Deal?
Why are small stars red? Why are small stars so common? Why are small stars so interesting for the hunt for life?
Feb 6th: Why should we believe the big bang?
What did Hubble really discover? Why does redshift imply an expanding universe? Why is the night sky dark? Why is there so much hydrogen, and how is that connected to the Big Bang?
Jan 16th: How Does Gravity Make a Lens?
How does gravity bend the path of light? Does it seriously act like a lens or is that just a metaphor?
Jan 2nd: Who Lives in the Particle Zoo?
What strange creatures inhabit the so-called “particle zoo”? Why is it a zoo instead of something simpler?
Dec 23rd: Atacama AstroTour Special
Spend six dark nights journey to the stars, hosted by astrophysicist Paul Sutter.
Dec 19th: Are quark stars real?
How does degeneracy pressure work? What kinds of particles exist below the level of neutrons?
Dec 5th: What makes a blazar blaze so brightly?
What powers a quasar? Just how strong is a blazar?