41–60 of 1,121 results
Gibbous Venus from Akatsuki

Solar System

Atomic Oxygen Detected on Venus

New data provide direct evidence for the existence of atomic oxygen in Venus's upper atmosphere, enabling new science on our sister planet.

Dinkinesh and its contact-binary moon

Space Missions

Lucy Mission Flies By Asteroid Dinkinesh, Finds Binary Moon (Updated)

The Lucy mission's flyby of the main-belt asteroid Dinkinesh resulted in a surprise — yet another asteroid moon!

Theia Impact

Astronomy in Space with David Dickinson

Bits of Theia Might Be in Earth's Mantle

A "smoking gun" for the ancient calamity that formed Earth’s large Moon may still exist deep in the mantle of our planet.

Solar System

New Forecast Resets Solar Cycle Expectations

A new forecast suggests that sunspot numbers, aurorae, and other solar activity will peak sooner and at a higher level than expected.

Starlink flares

Explore the Night with Bob King

How to See Freaky Starlink "Cluster Flares", Plus the Latest on Comet Lemmon

Alien invasion or flares from satellites in multiple orbits? It depends on your point of view. We also check in on Comet Lemmon, poised to possibly reach binocular-visibility.

Solar System

Marsquake Reveals Molten Layer Above Martian Core

An impact far from NASA's Insight lander on Mars set off seismic waves that revealed new details about the Martian interior.

Io, as imaged by Juno

Solar System

Striking New Views of Jupiter and Its Moon Io

The James Webb Space Telescope and Juno mission turned their eyes to Jupiter and its volcanic moon Io, revealing fine details.

Orionid composite 2015-2022

Explore the Night with Bob King

Orionid Meteors Fly; Two Moons Shadow Jupiter

Bundle up and enjoy the Orionid meteor shower under moonless skies this week. Don't miss the warm-up act, either, when two of Jupiter's moons pair up in a captivating double-shadow transit.

solar flare

Solar System

Unearthing a Solar Storm in Ancient Alpine Trees

Ancient pine trees hold the record of an atmospheric event 14,373 years ago. The only known explanation is a massive solar storm.

Psyche launch

Solar System

Psyche Mission Is on the Way to Psyche, the Asteroid

The Psyche mission launched today, on its way to rendezvous with the asteroid of the same name in 2029.

Sample

Solar System

First Look at Material from Asteroid Bennu on the Ground

The Osiris-REX sample collection team reveals the first look at material collected from the asteroid Bennu.

Sedna

Solar System

“Planet X” May Have Left Our Solar System Billions of Years Ago

A new understanding of far-off worlds in the outer solar system suggests that if "Planet X" ever existed, it has long since left the vicinity.

Comet 103P/Hartley diffuse appearance

Explore the Night with Bob King

Comet Hartley Comes Home Again; Gegenschein-gazing

Get acquainted with Comet 103P/Hartley. It's been a dozen years since its last bright apparition. While you're at it challenge yourself to spot the elusive gegenschein.

Solar System

Psyche Asteroid Mission Set for Launch October 5th

NASA’s newest mission is bound for the metallic asteroid of the same name. The metal-rich rock offers us a view of asteroid interiors.

Bennu sample return capsule on the ground in the desert, red-white parachute behind

Space Missions

Osiris-REX Capsule Returns Samples of Asteroid Bennu to Earth

Samples taken from the asteroid Bennu are now safely on Earth.

Explore the Night with Bob King

Action-packed Sky: Saturn, Comet Nishimura, and More

September is Saturn's time to shine. We also check on Comet Nishimura — now at 5th magnitude and still brightening — and look forward to a dramatic asteroid occultation. Not to mention that Jupiter just took another hit.

A diamond-shaped grey asteroid with ridges, holes, and craters in it, against a black background

Solar System

Rubble-Pile Asteroid Bennu Has Layers

The asteroid Bennu is a so-called rubble pile, but new results from NASA's OSIRIS-Rex mission indicate this heap of rubble has layers.

series of images of blue Neptune with bright clouds appearing and disappearing over nearly 30 years

Solar System

Solar Cycle May Trigger Clouds on Neptune

Nearly 30 years of observations indicate that Neptune’s clouds and brightness vary with the Sun’s activity.

Comet Nishimura C/2023 P1

Celestial Objects to Observe

New Comet Nishimura May Become Naked-Eye Bright

Comet Nishimura is quickly brightening in the morning sky and may be faintly visible with the naked eye next month. And on August 24th observers in North America will be treated to an occultation of Antares.

Chandrayaan 3

Solar System

India’s Chandrayaan 3 Lands on the Moon; Russia's Luna 25 Crashes

In a first, India’s Chandrayaan 3 soft-lands in the lunar south pole region of the Moon.