The world standard of mass is the kilogram, whose definition is based on the mass of a metal cylinder kept in France.Previously, the standard was based upon the mass of one cubic centimeter of water ...

Monday’s single-sol plan included a marathon 45-meter drive (about 148 feet), which put us in position for two full sols of ...

When it descends through the thick golden haze on Saturn’s moon Titan, NASA’s Dragonfly rotorcraft will find eerily familiar ...

The star-forming nebula W51 is one of the largest "star factories" in the Milky Way galaxy. "Star factories" like this one can operate for millions of years. The cavernous red region on the right side ...

Written by Scott VanBommel, Planetary Scientist at Washington University Earth planning date: Monday, May 12, 2025 Curiosity was back to work Monday, picking up where it left off from Friday’s plan.

Is frozen water scattered in systems around other stars? Astronomers have long expected it is, partially based on previous detections of its gaseous form, water vapor, and its presence in our own ...

The Sun emitted a strong solar flare, peaking at 4:25 a.m. ET on Wednesday, May 14. NASA’s Solar Dynamics Observatory, which watches the Sun constantly, captured an image of the event. Solar flares ...

This STL file is a topographic model of a portion of Valles Marineris with vertical exageration, derived from data collected by the MOLA altimeter onboard NASA's Mars Global Surveyor mission. Printed ...

The Sun emitted a strong solar flare, peaking at 11:38 a.m. ET on May 13, 2025. NASA’s Solar Dynamics Observatory, which watches the Sun constantly, captured an image of the event. Solar flares are ...

The Saturn V Second Stage contained five J-2 engines. After the first stage was discarded, the second stage burned for approximately 6 minutes taking the vehicle and payload to 115 miles altitude. The ...

Stormtime Geospace Storm time geospace is made up of a tangled web of interactions that vary from small to large scale all at once. This has been overwhelmingly challenging to predict or simulate. In ...

Have you ever wondered how many stars you can see at night? From a perfect dark sky location, free from any light pollution, a person with excellent vision may observe a few thousand stars in the sky ...