general theory of relativity

Astronomers using the Hubble Space Telescope have captured the most comprehensive picture ever assembled of the evolving Universe — and one of the most colourful. The study is called the Ultraviolet Coverage of the Hubble Ultra Deep Field. Caption and credit: hubble_esa/Flickr, CC BY 2.0

A Universe Out of Sight

Albert Einstein, general theory of relativity, gravitational lensing, Fritz Zwicky, Hubble constant, expansion of the universe, Sjur Refsdal, Orest Chwolson, Arthur Eddington, active galactic nuclei, black hole, Type Ia supernovae, Palomar Transient Factory,

A Non-challenge to the Special Theory of Relativity

Albie. Credit: saulotrento/Deviantart, CC BY-SA 3.0

Why This Himachal Officer’s Challenge to Einstein’s Theories Don’t Make Sense