1981–2000 of 6,715 results
Betelgeuse in Orion

Celestial News & Events

Betelgeuse is Dimming . . . Why?

The bright star Betelgeuse has faded to a historic low as astronomers try to figure out why.

ExoMars

Space Missions

Space Missions to Watch in 2020

Earth invades Mars and beyond with space missions in 2020

Geminids Dec 13_2018 Bob King 480x274

Celestial News & Events

The Best Meteor Showers in 2020

Sky & Telescope predicts that the three best meteor showers — the Quadrantids (peaking on January 4th!), Perseids and Geminids — will all have strong showings this year.

Celestial News & Events

What to See with Your New Telescope During 2019 Holidays

Maybe you just got a shiny new telescope to call your own. Congratulations — you could be on your way to discovering many amazing, far, deep things in the night sky.

Pulsar

Astronomy & Observing News

An Extreme Pulsar Seen in Gamma Rays

One of the fastest spinning radio pulsars known has now been detected to pulse in gamma rays, too. What can we learn from these new observations?

shadow image of M87

Astronomy & Observing News

Top 10 Astronomy News Stories of 2019

Our pick for the biggest astronomy news story of the year is the first-ever image of a black hole “shadow.” What's yours?

Hydrogen halo around young galaxy

Galaxies

How Young Galaxies Grow

A pair of recent studies sheds light on some of the universe’s earliest galaxies and how they grow.

CHEOPS satellite

Space Missions

European Mission Launches to Examine Alien Worlds

The European Cheops mission launched Wednesday on a mission to improve our understanding of hundreds of known exoplanets.

Chile-Argentina eclipse path in 2020

Celestial News & Events

2020 Total Solar Eclipse: Update from Patagonia

Check out the viewing site and accommodations in Argentina's lush Lake District for Sky & Telescope's expedition to witness the 2020 total solar eclipse on December 14, 2020.

Comet Borisov at perihelion

Solar System

Hubble Images Comet Borisov at Perihelion

The Hubble Space Telescope imaged the interstellar comet 2I/Borisov when it came closest to the Sun before heading back out of the solar system.

New cyclone joins Jupiter's south pole

Solar System

New Cyclone Joins Jupiter’s South Pole Club

Stunning new images from NASA’s Juno mission reveal that a new cyclone has budged its way into the grouping at Jupiter’s south pole.

Osiris-rex

Solar System

NASA Announces Site of Sample Selection for Osiris-REX

NASA has picked the "Nightingale" site, located within a small crater on the asteroid Bennu, for its Osiris-REX mission to sample next year.

The Great Square of Pegasus

Night Sky Sights

Deep-sky Dive Into the Great Square of Pegasus

We return to Pegasus, but this time with a telescope to find a grab-bag of overlooked deep-sky treasures.

Geminids Dec 13_2018 Bob King 480x274

Celestial News & Events

Geminids and the Moon Duke it Out

Don't let light from the gibbous Moon discourage you from enjoying the annual Geminid meteor show on the peak night, December 13-14.

Astronomy & Observing News

Meade Instruments Files for Bankruptcy Protection

Meade Telescopes files for Chapter 11 Bankruptcy protection after loosing an antitrust lawsuit brought by Orion Telescopes & Binoculars.

Tiger Stripes on Enceladus

Solar System

How Saturn's Moon Got Its Stripes

Astronomers have struggled to understand the origin of the parallel fractures on Saturn’s icy moon Enceladus, known as “tiger stripes,” from which water-ice spews into space. Now, a single explanation ties all the pieces together.

Debris ring around a white dwarf star

Exoplanets

How a White Dwarf Is Vaporizing Its Giant Planet

Astronomers have long suspected that white dwarfs eat their planetary companions. Now, indirect observations show the process in action.

bennu activity

Solar System

Asteroid Bennu’s Activity Still a Mystery

The near-Earth asteroid constantly shoots out rocks, leaving planetary scientists perplexed.

Parker Solar Probe

Solar System

First Science Returns from NASA's Parker Solar Probe

In the first public release of data from NASA’s flagship heliophysics mission, scientists on the Parker Solar Probe team reveal surprises and mysteries from our host star.

Starlinks cross DECam image

Astronomy and Society

The Starlink Situation

Shots of the Starlink satellite train crossing the heavens are dramatic — even shocking — but they’re also a bit misleading. The real problems that Starlink and other megaconstellation satellites pose are more insidious.