41–60 of 1,201 results
An artist’s impression of the collision of two black holes

Black Holes

Black Hole Rain

The planned LISA gravitational-wave detector might discover a shower of hundreds of small black holes falling in galactic centers.

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.

Sample

Astronomy in Space with David Dickinson

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.

Why We Look Up with Jennifer Willis

The Stars Are Waiting

Making room for astronomy in my life has felt like coming home — as if the universe has left a literal light on for me.

Comet 12P/Pons-Brooks outburst

Celestial News & Events

Comet 12P/Pons-Brooks (aka the "Millenium Falcon" Comet) Flares Again!

Comet 12P/Pons-Brooks has awakened again from its recent slumbers with a fresh outburst. It's now bright enough to see in a modest telescope.

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.

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

Astronomy in Space with David Dickinson

Osiris-REX Capsule Returns Samples of Asteroid Bennu to Earth

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

Flattened Sun

Explore the Night with Bob King

Is the Day 12 Hours Long on the Equinox? It's Complicated

The Earth's atmosphere and the large size of the solar disk result in unequal days and nights, even on the equinox.

launch

Space Missions

X-ray, Moon Missions Launch from Japan

In an ambitious mission pairing, Japan launched a next-generation X-ray observatory and an innovative lunar lander.

Why We Look Up with Jennifer Willis

Cosmic Recovery

Maybe deliberate experiences of joy and awe should be standard in any post-op plan.

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.

Aditya L1

Astronomy in Space with David Dickinson

India Launches Aditya L1 Solar Observatory

India’s first dedicated solar science mission Aditya L1 heads spaceward.

Comet Nishimura C/2023 P1

Solar System

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

Astronomy and Society

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.

dark hole surrounded by hot disk of swirling gas and shooting out a jet from its rotation axis

Black Holes

Black Hole May Have Formed by Direct Collapse

Astronomers may have spotted a supermassive black hole in the early universe that formed when a gargantuan gas cloud imploded.

a sun setting behind a tall pointed building and trees

Cosmic Relief with David Grinspoon

Seeing Through the Smoke

The near-term haze of climate disasters obscures our possible futures. But long-term trends leave room for optimism.

2016 Perseids

Explore the Night with Bob King

Get Ready for a Great Perseid Meteor Shower

The Perseids are here! With no Moon to spoil the show it's time to break out the lawn chairs, sit back, and watch the comet dust fly.

Space Missions

Russia Heads for the Moon for the First Time Since 1976

The launch of Russia’s Luna 25 lander heralds the nation’s return to lunar and planetary exploration.

Chandrayaan 3

Astronomy in Space with David Dickinson

India's Chandrayaan 3 Reaches for the Moon (Updates with Video)

India is headed back to the Moon with its ambitious new Chandrayaan 3 mission.

Voyager 2

Space Missions

Contact Briefly Lost with Voyager 2

NASA detected a faint "heartbeat" signal from Voyager 2, after an erroneous command caused the spacecraft to lose contact with Earth.