General Relativity
Astronomy Without A Telescope – Galactic Gravity Lab
[/caption] Many an alternative theory of gravity has been dreamt up in the bath, while waiting for a bus -…
14 years ago
Speed of Gravity
[/caption] What is the speed of gravity? It's 299,792,458 m/s. Seem familiar? Yep, it's the speed of light (in a…
15 years ago
This is Getting Boring: General Relativity Passes Yet another Big Test!
[/caption] Published in 1915, Einstein's theory of general relativity (GR) passed its first big test just a few years later,…
15 years ago
Einstein’s General Relativity Tested Again, Much More Stringently
[/caption] This time it was the gravitational redshift part of General Relativity; and the stringency? An astonishing better-than-one-part-in-100-million! How did…
15 years ago
Sirius B
[/caption] Sirius B is the name of the fainter, smaller, less massive star in the Sirius binary system (the brighter,…
15 years ago
What is an Event Horizon?
The event horizon of a black hole is the boundary ('horizon') between its 'outside' and its 'inside'; those outside cannot…
15 years ago