Normal matter – which makes up everything we see and touch – isn’t the only type of matter present in the universe.
The cold and remote planets originally earned their label of "ice giants" to contrast their interiors from those of Jupiter ...
Space.com on MSN
Asteroid belt — What it is, where it is and how it formed
A vast ring of rocky leftovers between Mars and Jupiter, the asteroid belt preserves clues to how the planets — and Earth ...
Researchers have uncovered evidence that Uranus and Neptune could be far rockier on the inside than anyone expected.
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