ASTR-1010 Lecture Notes - Lecture 19: Wilkinson Microwave Anisotropy Probe, Elliptical Galaxy, Spiral Galaxy
6 Oct 2016
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Q: galaxy a is moving away from me twice as fast as galaxy b. That means it"s twice as far away: a: yes, hubble"s law states that the distance of a galaxy from you is directly proportional to the velocity that it moves away from you. Q: using hubble"s law, d=v/h, calculate the distance to a galaxy that is moving away from us at 10,000 km/s. Hubble"s law does not apply to the nearest galaxies: gravitational tugs from nearby galaxies cause velocities greater than the. Know the different methods on the cosmological distance ladder; What order we use those methods; how far away does each of these. The consequence of hubble"s law is: most galaxies are moving away from us, then the milky way is at the center of the universe, no. The farther away galaxies are moving away from us faster. The universe itself is expanding: the galaxies expand with it.
