41–60 of 4,783 results
Pulsar-white dwarf pair

Cosmology

White Dwarf’s Whirlwind Spin Drags Spacetime

Astronomers have used observations of a tight white dwarf-neutron star pair to confirm an aspect of Einstein's general theory of relativity.

Zoomed-in Image of the Sun from the Inouye Telescope

Professional Telescopes

First Light from the World's Largest Solar Telescope

The Daniel K. Inouye Solar Telescope has taken its first image of the Sun, a detailed view of our star's boiling gases that far surpasses what was possible before. Science operations are set to begin later this year.

A bright supernova

Variable Stars

The Latest on Betelgeuse, Plus a Bright Supernova and New Comet Iwamoto

The sky provides. This winter, the fading of Betelgeuse caught us all by surprise. Now, as January wraps up, we can add a new comet discovery and a supernova bright enough to see in a 6-inch telescope to an ever-growing list of seasonal sky wonders.

Spacecraft and Space Missions

SpaceX Launches Fourth Starlink Batch; Concerns Remain

Concerns about the night sky remain as the fourth batch of Starlink satellites — and the second one to be launched within the span of a month — takes flight.

Milky Way

Nearby Stellar Nurseries Ride a Giant Wave

Astronomers have found a gigantic, undulating wave of stellar nurseries in our galaxy, just outside the Sun’s orbit in the spiral disk.

Superluminous supernova SN 2006gy

Stellar Science

Superluminous Supernova, Explained?

Some brilliant explosions at least 10 times more powerful than regular supernovae might come from a white dwarf merging with a massive companion star. But not everyone agrees on that explanation.

Thuban in TESS image

Variable Stars

See Ancient “North Stars" Eclipse Each Other

The ancient pole star known as Thuban turns out to be an eclipsing binary. If you're up for a challenge, you can see the eclipses for yourself.

Night Sky Sights

A Quick Tour of Orion, the Hunter

The evening sky this week presents a near perfect opportunity to explore winte'rs marquee constellation, Orion, with binoculars or a small telescope.

Host Galaxy of a Radio Flash

Stellar Science

New Mysterious Radio Flash Pinned Down; Hundreds More Being Discovered

Recent observations have pinpointed the location of a fifth fast radio burst, shedding light on the environs that create these powerful sources.

Globular cluster NGC 4147

Exoplanets

60-Second Astro News: Planets in Tight Quarters & Kuiper Belt Forays

Astronomers have calculated the loss of planets around stars in globular clusters, and New Horizons returns observations of worlds in the outer solar system.

Impact event

Astronomy in Space with David Dickinson

After a Century, Geologists Find Crater Responsible for Meteorite Mystery

After a century, researchers may finally have solved a prehistoric meteorite mystery.

Comet PanSTARRS blooms

Celestial Objects to Observe

Comets to Catch in 2020

Here's the lowdown on which comets will brighten our skies in 2020.

Proxima Centauri c

Exoplanets

Astronomers Discover Second Planet in Nearest Star System

Astronomers have announced the discovery of Proxima Centauri c, an inhospitable super-Earth just 4.3 light-years away.

Stellar Science

Baby Stars Found in Ancient Part of Our Galaxy

Ground- and space-based observations have revealed a group of stars at the head of the giant stream of gas burrowing its way through the Milky Way.

Gravitational lensing

Cosmology

Hubble Sheds Light on Dark Matter and Cosmic Expansion

The Hubble Space Telescope, which will celebrate its 30th birthday this April, has images cosmic mirages that yield two remarkable cosmological results.

V Sagittae Finder Chart

Stellar Science

Mark Your Calendar: Stellar Fireworks Predicted for 2083

According to Bradley Schaefer (Louisiana State University), the 11th-magnitude variable star, V Sagittae, will outshine Sirius and maybe even Venus — despite its distance of some 7,500 light-years.

Dwarf Galaxy

Black Holes

More Big Black Holes Found in Small Galaxies

In the quest to discover how massive black holes form, astronomers have spotted several of these objects in some of the smallest galaxies yet found to host them.

Waiting for darkness.

Celestial News & Events

A Selection of Observing Resources for Getting Started in Astronomy

Here are some great books, star charts, and other observing accessories to help you get the most out of your new telescope.

Star with two suns

Exoplanets

NASA's TESS Introduces Us to Our Planetary Neighbors

NASA's TESS mission announces the results from its first year of exoplanet-hunting in the southern sky, introducing us to some of our planetary neighbors.

Neutron Star Pair Collides (art)

Stellar Science

Gravitational Waves from Second Neutron-star Collision Observed

Scientists with the Laser Interferometer Gravitational-wave Observatory (LIGO) and Virgo collaborations have announced the detection of a second pair of neutron stars that went bump in the night.

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