2501–2520 of 6,729 results
Jupiter's South Pole

Solar System

Amazing Storms, Jet Streams on Jupiter

NASA’s Juno spacecraft has found breathtaking cyclones at Jupiter’s poles and probed how deep the planet’s jet streams go.

Andoya Launch

Solar System

Rocket Barrage to Study Northern Lights

A series of 11 sounding rocket flights from two remote locations in the Arctic circle will help unlock the secrets of the processes behind the Northern Lights.

Milky Way

Dwarf Galaxy Collision Evicted Milky Way Stars

A long-ago encounter between our galaxy and an orbiting dwarf might have ejected some of the Milky Way’s stars.

James Webb Space Telescope

Professional Telescopes

James Webb Space Telescope: Additional Delays "Likely"

A non-partisan government office has issued a report warning of additional delays for the James Webb Space Telescope, which could pit the mission against its funding cap.

Terrestrial Synestia (art)

Solar System

Could a Giant Impact Have Vaporized Earth to Create the Moon?

In a new twist on the giant impact theory, a new idea posits that the Moon might have formed from the vaporized remains of Earth after an epic collision with another planet-sized body.

Mercury & Venus in March 2018 480p

Celestial News & Events

Tour March's Sky: Planet Peeks at Dusk

With winter's chill fading away, this is a great time to gaze up into the stars — and to be ready for an evening appearance by fleet-footed Mercury. This month's astronomy podcast guides you around the nighttime sky.

First Stars (art)

Cosmology

Primordial Chill Hints at Dark Matter Interactions in Early Universe

A simple experiment has detected a signal from the first stars forming just 180 million years after the Big Bang. The observations have intriguing implications for the nature of dark matter.

Exoplanets

An Eccentric Planet Skims a Giant Star

As part of a major survey of evolved stars, scientists have discovered the most eccentric planet known to orbit a giant. What can we learn from this unusual object before it’s eventually consumed by its host?

Ultraluminous X-ray Source

Black Holes

Neutron Star Powers Ultraluminous X-rays

It turns out that neutron stars — not black holes — power at least some ultraluminous X-ray sources.

The torus at the center of M77 / NGC 1068

Black Holes

Astronomers Watch Donut Rotate Around Supermassive Black Hole

Astronomers have detected a torus rotating around the supermassive black hole at the center of spiral galaxy Messier 77, collecting observations that may shed light on why these weird structures exist.

binary supermassive black hole

Black Holes

60-Second Astro News: Merging Black Holes, Distant Super-Supernova, and Arecibo's Fate

Supermassive black holes en route to merger have strange dynamics in their gas disks. Astronomers have spotted the most distant spectroscopically confirmed supernova. And NSF decides the fate of the Arecibo Observatory.

Stellar Science

Amateur Astronomer Captures Supernova’s First Light

In 2016 an amateur astronomer was testing his camera — and captured the first flash of a supernova.

Celestial News & Events

Venus Peeps Back Into View at Dusk

After a long drought, a bright planet emerges in the western sky. Welcome back, Venus!

WFIRST

Science and Space Policy

NASA Budget Proposal Cancels WFIRST

The recent budget proposal for NASA dealt a blow to the astronomical community, putting several key missions — including WFIRST, a successor to Hubble — under the financial axe.

Substorm graphic

Solar System

Chorus Waves Drive the Beat for Pulsating Northern Lights

Scientists have finally confirmed a decades-old theory on what causes the faint flickering seen in the Northern Lights toward dawn.

People, Places, and Events

A Picture-Perfect Solar Eclipse Experiment

AAS Chambliss Award winner Donald Bruns explains how he confirmed Einstein's predictions during the 2017 total solar eclipse.

Galaxies

Hubble’s View of Little Blue Dots

The recent discovery of a new type of tiny, star-forming galaxy is the latest in a zoo of detections shedding light on our early universe. What can we learn from the unique “little blue dots” found in archival Hubble data?

Celestial News & Events

Asteroid 2018 CB Zips by Earth Friday: Watch it Online

Newly-discovered asteroid 2018 CB will be passing only about 44,000 miles away Friday and visible in modest telescopes.

SpaceX Falcon Heavy launch

Space Missions

Long-Awaited Falcon Heavy Ready For Business

SpaceX made history on February 6th when the company successfully launched its long-awaited Falcon Heavy rocket from Kennedy Space Center in Florida.

Dark matter vs. ordinary matter in IllustrisTNG

Cosmology

Simulating the Universe: The Next Generation

A new suite of cosmological simulations sheds light on the interconnected cosmic processes that shape the universe.