کتاب های نویسنده Barry Parker (auth.)

Colliding Galaxies: The Universe in Turmoil

Published on: 1990

Beginner Unordered English

I remember sitting spellbound, watching the movie When Worlds Collide. Two planets hurled through space toward Earth while scientists and …

galaxies collisions universe turmoil astrophysics

Invisible Matter and the Fate of the Universe

Published on: 1989

Beginner Unordered English

Dark Matter Cosmology Universe Physics Astronomy

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