61–80 of 1,245 results

Solar System

JWST Discovers New Moon of Uranus

Astronomers have spotted a new small moon for Uranus in images from earlier this year.

Enceladus

Solar System

Saturn’s Moon Enceladus Might Have Weird “Space Rainbows”

Scouring old data from NASA’s Cassini mission revealed puzzling atmospheric stripes that could help probe Saturn’s icy moon.

Comet 3I/ATLAS orbit

Solar System

Interstellar Comet 3I/ATLAS: What We Know Now

Observations have revealed the comet’s fuzzy coma, hinted at a weird tail, and suggested an ancient history. Plus, some missions might keep observing the interstellar comet when it ducks behind the Sun.

Watching the Southern Delta Aquariids

Solar System

Thumbs Up for the Delta Aquariid Meteor Shower

Meteor-watchers will be busy this month and next. Not only are the Southern Delta Aquariids peaking soon, but they get a boost from additional minor showers.

Comet 3I/ATLAS amateur view

Solar System

Rare Interstellar Comet Buzzes Solar System

A newfound comet from a remote star system may become bright enough to see in amateur telescopes this November.

Solar System

Never-Before-Seen Views of the Sun

New observatories in space and on the ground are providing us with our best views yet of the Sun — providing insight into puzzles that have remained unsolved for decades.

Jupiter's Great Red Spot

Solar System

Newborn Jupiter Was Twice as Big As It Is Today

A new study of the motion of Jupiter’s moons has revealed that the king of planets, when it was young, was at least twice as large as it is today.

Aurora reflections

Solar System

Major Flare Could Spark Severe Geomagnetic Storm Sunday Night, June 1st

Tips for viewing tonight's hoped-for aurora whether your skies are clear or smoky.

Image of solar plasma in pink

Solar System

Sharpest Images Yet of the Sun's Corona [VIDEOS]

New adaptive optics technology has resulted in the sharpest views yet of the solar corona.

Orbit diagram for 2017 OF201

Solar System

Another Dwarf Planet in Our Solar System?

A newly discovered object in the outer solar system, 2017 OF201, is the largest found in more than a decade.

Two sets of images show clouds moving higher in altitude over a few days.

Solar System

Methane Clouds in Motion on Saturn's Moon Titan

Astronomers have watched clouds move in Titan's atmosphere and even observed the chemistry of Saturn's moon in action.

Full Moon with Cassini's Bright Spot

Solar System

"Cassini's Bright Spot" Beams at Full Moon

Rayed craters pepper the Moon especially around full. Cassini's Bright Spot is one of the most striking.

Black and white representation of an ellipsoid asteroid

Solar System

Metal Shards Shed Light on the Origin of Asteroid Kalliope

Small relatives of the much-larger Kalliope, a metallic main-belt asteroid shed light on their mutual origin early in solar system history.

Vesta by Dawn

Solar System

Asteroid Vesta Now an Easy Catch in Binoculars

Vesta, both protoplanet and asteroid, reaches opposition on May 2nd. From a dark sky it's even visible with the naked eye.

asteroid donaldjohanson

Solar System

Meet Asteroid Donaldjohanson: Long and Lumpy

During a close flyby on April 20th, NASA’s Lucy spacecraft surprised its science team by revealing an asteroid that was once two smaller pieces that have been conjoined into a larger whole.

Enceladus

Solar System

Plumes from Saturn's Moon Enceladus Might Come Straight from Its Hidden Ocean

Researchers reanalyzing Cassini data think the plumes from Enceladus might provide direct access to the Saturnian moon's underground ocean.

Comet C/2025 F2 (SWAN)

Solar System

New Comet SWAN Now Visible in Small Scopes

A new comet discovered in spacecraft images is bright enough to make you get out of bed before dawn.

Pictures of nearside and farside of the Moon, with green points dotting the left half of the nearside image, as well as a bit of the right side of the farside image.

Solar System

Near-Earth Asteroid 2024 YR4 Might Aim for the Moon

The asteroid that will now definitely not hit Earth has the highest odds ever for a predicted lunar impact — but a miss is still more likely.

Orbit of asteroid 2024 YR4 with respect to the solar system

Solar System

Webb Telescope Has Weighed in on Impact Odds for Asteroid 2024 YR4 (Updated)

So far, searches for archival images that could confirm or rule out the asteroid's impact have come up dry, but Webb observations in May could help pin down the orbit.

Sunrise eclipse inferior mirage

Solar System

Sunrise Solar Eclipse on March 29th for Eastern North America

The March 29th partial solar eclipse offers unique opportunities for photography and viewing alike.