Solar System Exploration - Science@NASA
Apr 28, 2025 · The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1.3 million asteroids, and about 3,900 comets.
Extreme Weather and Climate Change - Science@NASA
Oct 23, 2024 · Research says all the risks from these extreme weather events will escalate the more the planet warms. However, IPCC’s Sixth Assessment Report also describes some climate change mitigation strategies, technological developments, and methods for reducing greenhouse gas emissions. How do scientists determine if changes in extreme weather events are linked to climate change?
Freshwater - NASA Science
May 13, 2025 · Water drives life, economies, and security — and NASA tracks its constant motion as it shifts between sea, land, and sky. From sustaining agriculture and energy to shaping landscapes and communities, freshwater is essential.
Snow and Ice - NASA Science
Apr 30, 2025 · NASA’s satellites, aircraft, and field campaigns help scientists build a better understanding of snow and ice around the globe. Through decades of missions to monitor Earth’s frozen landscapes, NASA provides the data necessary for scientists to continuously monitor Earth's largest store of fresh water.
Jupiter - Science@NASA
May 13, 2025 · Jupiter is the fifth planet from the Sun, and the largest in the solar system – more than twice as massive as the other planets combined.
About the Planets - Science@NASA
Apr 22, 2025 · Introduction. What is a planet? The word goes back to the ancient Greek word planēt, and it means "wanderer." A more modern definition can be found in the Merriam-Webster dictionary which defines a planet as "any of the large bodies that …
Mercury Facts - Science@NASA
Apr 25, 2025 · Mercury is the smallest planet in our solar system and nearest to the Sun. It's only slightly larger than Earth's Moon.
Neptune Facts - Science@NASA
Apr 21, 2025 · Neptune is the eighth and most distant planet in our solar system. It was discovered in 1846. Neptune has 16 known moons.
May 2025 - NASA Science
May 6, 2025 · Mars scientists have recently marked a new year on the Red Planet, a milestone that occurs every 687 days. Because the Martian new year coincides with spring in the planet’s northern hemisphere, it’s a time of lots of activity — avalanches, exploding jets of gas, and more.
Mars Facts - Science@NASA
Apr 22, 2025 · Mars is one of the most explored bodies in our solar system, and it's the only planet where we've sent rovers to roam the alien landscape.