Are there really primordial black holes? What do you make of the helical drive? Today @CheapAstro investigates some unsubstantiated claims
Sep 4th: Unsubstantiated Claims
Cheap Astro Archive
Jul 27th: Space is Hard & Mars is Harder
Is there any point in ‘Nuking’ Mars? How are we going to get home from Mars? more with @CheapAstro at #365DaysOfAstro
Jul 13th: We’re Full of Stars
Today @CheapAstro is full of stars. What do different pulsar frequencies mean? How are stars named? Find out the answer at #365DaysOfAstro
Jun 22nd: You Can Never Have Enough Space Missions
You can never have enough space missions. Today, @cheapastro investigates some ideas on the launchpad.
May 25th: Speculation
Cheap Astronomy explores some more possibilities about parallel universes and fusion energy.
May 11th: Looking Ahead
This is our near future, unless it doesn’t happen.
Mar 31st: Unusual Orbits
Cheap Astronomy stumbles around in the dark.
Mar 23rd: Free Fall To A Center Of Mass
Falling, as little as possible. Today @cheapastro will answer: How long would it take an object to fall into the Sun from one light year away and talk about the principle of least action
Mar 10th: More Robots on Mars
Woo hoo! Another Mars rover! More robots on Mars.
Feb 9th: Back To Basics
In the gutter, looking up at the stars. So the water came from asteroids now? And what are the Voyagers learning about interstellar space?