SUNSET: 
Explore the Night with Bob King
Celebrate Spring with the Lyrids
People have been watching the annual Lyrid meteor shower for more than 2,700 years. Come join the crowd!
What's in Store for the Next Decade of Planetary Science
Big winners in the planetary science decadal survey include a Uranus flagship mission, a orbiter and lander for Enceladus, and an emphasis on planetary defense.
Icy Moon Europa May Host Water Near the Surface
Radar measurements of ice on Earth suggest that Jupiter's moon Europa might host water near its surface.
Summer on Neptune is Surprisingly Chilly
Even though Neptune is entering its version of summer, it's actually cooling down — except for its poles, which are mysteriously warming up.
U.S. Space Force Releases Data on Bright Fireballs
The U.S. Department of Defense has released data on some 1,000 bright fireballs. Scientists are still debating if the data confirm an interstellar meteor.
Listen to the Martian Soundscape
Two microphones on Mars, carried on NASA's Perseverance rover, are for the first time revealing the sounds of another planet.
Where Did the Ice Giants Form?
Conventional planet formation scenarios have Neptune and Uranus forming closer to the Sun. But a new study shows that the ice giant planets could have formed right where they are now.
The History of Venus in Air, Rock, and Water
Forty years ago, NASA's Magellan mission “closed the book” on Venus. Now, a new generation of astronomers think the planet next door deserves a second chance.
Explore the Night with Bob King
Will Saturn Sprout Spots this Observing Season?
As Saturn returns to the morning sky, will this otherwise serene-looking planet experience another bout of severe weather? Keep your eyes peeled for white spots!
How Apollo 17 Is Preparing Artemis for a Return to the Moon
Researchers gear up for Artemis and a new generation of lunar exploration, with a look at samples from the final crewed mission to the Moon.
How Many Moons Can an Asteroid Have?
The discovery of the first quadruple asteroid system raises the question: Is there a limit to how many moons an asteroid can have?
Astronomy in Space with David Dickinson
Update from the Hope Probe at Mars
The United Arab Emirates' Hope Probe, on a wide orbit around Mars, provides views of the dynamic Red Planet.
Explore the Night with Bob King
Uncovering Secrets of Earth's Shadow
The daily rising and setting of Earth's shadow is a beautiful sight anyone on the planet can view. It's also an opportunity to witness the rapid changes that accompany sunset or sunrise, but at the opposite end of the sky.
The Parker Solar Probe Captures Surprising Images of Venus Nightside
A visible glow from our sister planet’s nightside sheds new light on a 300-year-old observing enigma dubbed the “ashen light.”
Solar Tsunami Hit Earth 9,200 Years Ago
Scientists examining ancient ice cores have found radioactive evidence of an extreme solar storm that took place in 7,176 BCE.
Meteorite Evidence Suggests Earth’s Water Was Here Before Earth Was
Where did Earth’s water come from? One of the oldest meteorites on Earth is adding new pieces to an old puzzle.
Citizen Scientists Find 1,000+ Asteroids Photobombing Hubble Images
The combined power of citizen science and machine learning have led to the discovery of more than 1,000 new asteroids in archival images taken by the Hubble Space Telescope.
Evidence Hints at Ancient Life on Mars
Scientists have found a chemical signature that hints at ancient life on Mars. But other possible explanations remain.
Set Your Sights on This Lunar Bull’s-Eye
Go ahead, live on the edge: Grab your chance this month to see Mare Orientale, one of the most spectacular lunar seas most people have never seen.
Watch an Asteroid Race Across the Sky
The kilometer-wide, potentially hazardous asteroid 1994 PC1 will fly past Earth on January 18th. Good news on two counts: It won't hit us, and it's bright enough to see in a 4-inch telescope.