Radio waves coming from galaxies millions or billions of light-years away—an immense distance compared to only eight light-minutes between the Earth and the Sun—gradually fade as they lose energy. Many become essentially invisible even to today’s powerful telescopes by the time they reach our little, blue planet. So it’s not[Read More…]
Tag: galaxies
AstroMcGill talk sheds light on the Big Bang
The universe is comprised of billions of galaxies—encompassing all of space, all of time, and all of its contents. It all started with a Big Bang 13.8 billion years ago. On Nov. 16, particle physicist and cosmologist Oscar Hernández spoke about the Big Bang at AstroMcGill’s event Where, When &[Read More…]
