Cheap Astronomy - Dear CA Ep. 105: Life & Death

The 365 Days of Astronomy

Staying alive…

Dear Cheap Astronomy – Just how useful are humans in space?

Just by landing robots on Mars, we’ve been able to take lots of photos, smell the air, feel the

ground and listen to the wind blow. We’ve got bogged in difficult terrain, but also climbed hills to

take in the view and even operated a drone. Sending people there is a lot more fraught…

Dear Cheap Astronomy – What is the death zone radius of a black hole merger?

The background to this question is the gravitational wave data we’ve been detecting with LIGO

– the Laser Interferometer Gravitational Wave Observatory. The data received can be reverse-

engineered to quantify the astronomical event that caused the gravitational waves detected.

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