Earth and Mars were formed from material that largely originated in the inner Solar System; only a few percent of the building blocks of these two planets originated beyond Jupiter’s orbit. A group of ...

Emily Simpson has loved space since she was a 10-year-old kid celebrating her birthday at a planetarium. Now a recent Florida Tech graduate, she leaves with not only a dual degree in planetary science ...

The black star represents the position of the star. The colored lines are the orbits of two planets. The yellow one is the outer, and it is highly inclined. The inner one is the red one. As time ...

Our solar system, a cosmic ballet of planets held together by gravity and inertia, is uniquely structured compared to many ...

This artist’s concept depicts one of the solar system’s inner planets slamming into Earth after being nudged on a collision course by a passing star. Such a world-shattering cataclysm is extremely ...

The discovery of an extraordinary multi-planet system has demonstrated that so-called "hot Jupiter" planets may not be lonely giants after all. The findings could force scientists to revise their ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...