Filmmaker Adam Nemoy helps celebrate the 90th anniversary of Pluto's discovery this month at the 6th annual 'I Heart Pluto' ...

Mercury takes only 88 Earth days to orbit the sun.

The moon's ascending node (the point in the sky where its orbit crosses the ecliptic from south to north) is moving westward ...

Scheduled to launch on Feb. 27, NASA's PUNCH mission could revolutionize space weather forecasts, unify the solar corona and ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Here’s how it works. The term "perihelion" describes the point in an astronomical body's orbit where it is nearest to the sun. Derived from the Greek words peri (around) and helios (sun), the ...

This happens because planets move faster when they are closer to the sun. The main reason why orbits are drawn as ellipses in textbooks is to demonstrate Kepler's second law. If the orbit of the ...

The Blue Ghost lunar lander has captured its first images of the moon from Earth’s orbit as well as a video of Earth ...

Earth's unusual orbit through hot and cold conditions tests the limits of tolerability for any known lifeforms.

An asteroid that orbited near Earth for a few months as a mini-moon may be a chunk of the moon that was blasted off by an ...

The Znamya project had the potential to change the world. The BBC's Tomorrow's World reported on an experiment that was ...

So why has the sun been rising later than it did on Dec. 21? Like much of our day and night cycles, the answer lies in Earth's rotation and orbit. Yes, the sun has risen later than it did Dec.