According to Hubble's law, how do two galaxies at different distances from Earth compare?
The closer the galaxy is, the hotter its stars are.
The closer the galaxy is to Earth, the bluer its stars are.
The farther away the galaxy is, the more dark matter it contains.
The farther away the galaxy is, the faster it is moving away from us.

One of the author’s purposes in the code book is to explain different types of codebreaking to his readers. which line best demonstrates this purpose? a theoretical breakthrough would be a fundamentally new way of finding alice's private key mathematicians have been studying factoring for centuries, and modern factoring techniques are not significantly better than ancient techniques a more recent development is the so-called tempest attack, which aims to detect the electromagnetic signals emitted . . in a computer's display unit if scientists could build a quantum computer, it would be able to perform calculations with . . enormous speed