Q: Why do the planets all orbit the Sun in the same plane? —Randi Eldevik | Stillwater, Oklahoma Because of the way the Sun formed, explains David DeVorkin, a senior curator in the space history ...

Asteroids’ orbits around the sun may put them in collision paths with inner planets. We may have had a near-miss, but ...

Republicans are discussing an idea that has long been anathema within the party: a tax hike on the wealthy. NBC News' Sahil Kapur joins Morning Joe to discuss. Tennessee coach Josh Heupel shares ...

The image of Luke Skywalker gazing wistfully across the desert of Tatooine while a pair of “suns” set on the horizon is among ...

Earth rotates on an axis, which is not perpendicular to Earth’s orbit. During winter, the North Pole is tilted away from the Sun’s rays. As the Earth travels around the Sun, the tilt gradually ...

Earth rotates on an axis, which is not perpendicular to Earth’s orbit. During winter, the North Pole is tilted away from the Sun’s rays. As the Earth travels around the Sun, the tilt gradually ...

New observations have revealed that a day on Uranus is slightly longer than previously thought. According to scientists, data ...

Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? Researchers show that this is not due to the random pull of the planets, but rather the ...

An analysis of two decades of data from NASA's Hubble Space Telescope has provided fresh insights into the complex ...