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Showing posts from 2017

How will the universe end?

The CMB Cold Spot

The cosmological principle

How galaxies are grouped - superclusters

Why is the sky dark at night? - Olbers's paradox

Apparent size - angular diameter

Comprehending how large the observable universe is

Breakthrough Initiatives - the search for extraterrestrial life

Enceladus : perhaps one of the several moons to host life in the solar system?

What happened to Mars' oceans?

Stellar classification

How exoplanets are detected

How did the Moon form?