SUNSET: 
`Oumuamua: Red, Tumbling, and Silent
Astronomers' recent observations of our first-known interstellar visitor reveal that it is very strange indeed.
AGU 2017: News from the Solar System
Here's a quick look at results announced at the 2017 American Geophysical Union meeting in New Orleans: exploding meteoroids, Saturn's ring-atmosphere connection, and more bright spots on Ceres.
Does New Horizons’ Target Have a Moon? (Update: Nope)
New analysis from the New Horizons team suggest that the spacecraft's next target in the Kuiper Belt might have a third companion.
Juno Probes Depths of the Great Red Spot
NASA’s Juno spacecraft peeked under the clouds of the most iconic weather feature in the solar system, Jupiter’s Great Red Spot, revealing a complex structure deep below the surface.
Why is Earth Magnetized and Venus Not?
A new analysis reveals that the gigantic impact that led to the Moon's formation might have also switched on Earth's magnetic field.
NASA Joins Japanese Mission to Martian Moons
NASA is developing a key instrument for a mission to the Martian moons, Phobos and Deimos.
Meet 'Oumuamua, the Interstellar Cigar
Rapid-response observations by major observatories shows that the first-known interstellar visitor is 10 times longer than it is wide.
Update on `Oumuamua, Our First Interstellar Object
The arrival of an object from beyond the solar system caught astronomers by surprise — but that doesn't mean that they were unprepared to study it.
A Twisted Tail of Martian Magnetism
Observations from NASA's MAVEN spacecraft reveal that the solar wind causes unexpected interactions with the Red Planet's weak magnetism.
Astronomy in Space with David Dickinson
How Bright is the Moon . . . Exactly?
An upcoming study will take the old calibration standard of the Moon's brightness to a new level of precision.
Astronomers Spot First-Known Interstellar "Comet"
Telescopes only picked it up a week ago, but it's likely been traveling through interstellar space for millions of years.
New High-End Search for Lunar Impacts
A professional observatory in Greece has begun recording flashes created when bits of interplanetary debris strike the Moon.
Surprising Science from Cassini's Grand Finale
You'd think scientists would have Saturn all figured out after watching it up close for 13 years. They don't.
Surprise! Dwarf Planet Haumea Has a Ring
When the distant dwarf planet Haumea briefly slipped in front of a star last January, astronomers found more than they expected.
Ancient Moon Had Atmosphere Made of Volcano Smoke
Roughly 3.5 billion years ago huge volcanoes released enough gas to cover the Moon with a thin atmosphere that was visible from Earth.
Astronomy in Space with David Dickinson
Asteroid 2012 TC4 To Zip Past Earth This Week
The close pass of near-Earth asteroid 2012 TC4 this week will give NASA a chance to test planetary-defense coordination.
Neptune's Moon Triton to Occult Star
Here’s an opportunity for amateurs to help improve our understanding of Neptune’s moon Triton.
Millions of Americans Viewed August Solar Eclipse
The 2017 solar eclipse could easily be the most watched event in US history. Can we learn something from it?
New Map of Water in Moon Dust
A new analysis maps out water across the lunar surface, revealing how its abundance changes with latitude.
Cassini Is Gone: Its Legacy and the Future
After 13 years of orbiting the Saturn system, and 4.9 billion miles logged, the Cassini mission has ended, vaporized on re-entry into the ringed planet.
