The paths that planets take as they revolve around the Sun are known as orbits. In our solar system, all eight planets—Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune—follow distinct, elliptical (oval-shaped) paths around the Sun. This motion is governed primarily by the law of universal gravitation, as famously described by Sir Isaac Newton, and the geometrical laws of planetary motion formulated by Johannes Kepler.
Striking images from Hubble, Webb, and the Very Large Telescope dive into Saturn's atmosphere, capture the Crab Nebula's expansion, and reveal a newborn planet.
"It ain't about racism. It's about the human condition."
Artemis 2 will launch four astronauts around the moon no sooner than April 1. Why won't this quartet land on the lunar surface?
Auroras may be visible from Alaska to Wyoming tonight as Earth braces for impact from a speedy coronal mass ejection.
Eight CubeSats and one payload supported by the European Space Agency (ESA) reached orbit, where they will demonstrate various applications aimed at improving how data is sent around and processed. Thanks to these demonstrations, practical and – sometimes – even life-saving data enabled from space will move more efficiently and reach the right actors on time in the future.
It's not often that astronomers can observe huge changes in a galaxy's brightness over the course of a few years. Most galaxies change in brightness (and other characteristics) over millions or billions of years. So, when images of the 10-billion-light-year distant galaxy J0218-0036 showed that it dimmed down by a twentieth of its previous brightness in just 20 years, observers were surprised. What could cause it to do that? That's not "normal" for AGN.
A massive X1.4 solar flare won't endanger NASA's four Artemis 2 astronauts on their way to the moon.
Astronomers have spotted the most distant and brightest "space laser" ever seen, and it's blasting from a galaxy collision that occurred when the universe was half its current age.
"You dare agree with me? Prepare to meet your horrible doom!"
Space is an incredibly vast and mysterious realm, constantly surprising us with its immense scale and remarkable phenomena. Here are some fascinating facts about the cosmos.
Our solar system's famous "invader" might be as old as the Milky Way itself.
A SpaceX Falcon 9 rocket stands in the launch position at Space Launch Complex 40 at Cape Canaveral Space Force Station ahead of the launch of the Starlink 6-88 mission. Image: John Pisani/Spaceflight Now
SpaceX’s fleet-leading Falcon 9 booster will make a record-breaking 34th flight Monday on a mission to deploy a batch of 29 satellites for the company’s internet service.
George Lucas had dreams of Darth Maul as the big bad of his sequel trilogy; here's why that would have been a bad idea.
A lot of people are coming to Florida for the historic Artemis 2 moon launch, so they'll need to budget extra time to see the astronauts fly.
From 'Destination Moon' to 'Apollo 13,' here’s a full spectrum of lunar-set films to count down.
The Artemis 2 astronauts will spend about 10 days flying to and from the moon, so they'll need to find creative ways to dine in a small space.
NASA's SLS moon rocket casts a striking silhouette against the rising sun ahead of the agency's Artemis 2 mission, currently scheduled for April 1.
Jeremy Hansen, the Canadian flying to the moon on board NASA's Artemis 2 mission, included Indigenous perspectives on his personal mission patch.
An X1.4 solar flare triggered radio blackouts and launched a fast CME as NASA prepares for its Artemis 2 moon mission.
Space weather experts have been working overtime to hone their forecasts ahead of the Artemis 2 launch, which will send four astronauts around the moon and back to Earth.
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