Latest Hydrogen line Stories
Thirteen billion years ago our universe was dark.
Ancient light absorbed by neutral hydrogen atoms could be used to test certain predictions of string theory, say cosmologists at the University of Illinois. Making the measurements, however, would require a gigantic array of radio telescopes to be built on Earth, in space or on the moon.
ESO's VLT has helped scientists to discover a large primordial 'blob', more than 10 billion light-years away.
- A coin originally worth six pennies Scots, and later three; held equivalent to an English halfpenny.
- (in plural) Money; cash.