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 2021-04-22 12:00 

Sky & Telescope

Redefining a Heavy Collision...

Could the biggest — literally — gravitational-wave discovery yet be something other than what it initially seemed? The post Redefining a Heavy Collision appeared first on Sky & Telescope ....

 2021-04-21 17:43 

Sky & Telescope

Hunting Barnard's Variable in the Globular Cluster M3...

We beat a path through a forest of stars to find the first variable star ever discovered in a globular star cluster. The post Hunting Barnard's Variable in the Globular Cluster M3 appeared first on Sky & Telescope ....

 2021-04-20 00:52 

Sky & Telescope

Ingenuity Mars Heliscopter: First Flight on Mars...

NASA's Ingenuity Mars Helicopter has made its brief hop into the history books of interplanetary aviation. The post Ingenuity Mars Heliscopter: First Flight on Mars appeared first on Sky & Telescope ....

 2021-04-19 12:00 

Sky & Telescope

Crab Pulsar's Mystery Bursts Are Even More Powerful Than We Thought...

The Crab Nebula pulsar has sporadically bursted for decades. Now, astronomers have found these mysterious bursts release even more energy than thought. The post Crab Pulsar's Mystery Bursts Are Even More Powerful Than We Thought appeared first on Sky ...

 2021-04-16 08:49 

Sky & Telescope

This Week's Sky at a Glance, April 16 24...

The waxing Moon this week steps out of Taurus past Mars, across Gemini and Cancer, and into Leo. Sirius and Procyon remain in the southwest after dusk. Jupiter and Saturn shine in early dawn. The post This Week's Sky at a Glance, April 16 24 appeared ...

 2021-04-15 18:06 

Sky & Telescope

A Bouquet of Novae Brightens April Nights...

With the recent discovery of Nova Scorpii 2021 earlier this week, three bright stellar explosions are now visible in small telescopes from dusk till dawn. The post A Bouquet of Novae Brightens April Nights appeared first on Sky & Telescope ....

 2021-04-15 16:34 

Sky & Telescope

What's in the New NASA Budget Proposal...

The latest NASA budget proposal would invest in science in a big way, including a large increase in funding for space exploration. The post What's in the New NASA Budget Proposal appeared first on Sky & Telescope ....

 2021-04-14 18:37 

Sky & Telescope

New Distances Support Idea of Dark Matterless Galaxies...

New distances to two dwarf galaxies with unusually spread-out stars support the idea that these galaxies have little to no dark matter. The post New Distances Support Idea of Dark Matterless Galaxies appeared first on Sky & Telescope ....

 2021-04-14 14:25 

Sky & Telescope

Astronomers Use AI to Investigate Quasars and Galaxies Galore...

New applications of machine learning have enabled astronomers to classify 27 million galaxies and pick out a dozen rare quadruply lensed quasars. The post Astronomers Use AI to Investigate Quasars and Galaxies Galore appeared first on Sky & Telescope ....

 2021-04-12 16:23 

Sky & Telescope

Flares from the Milky Way's Supermassive Black Hole...

The supermassive black hole at the center of the Milky Way released an unusual number of strong flares in 2019. Now, astronomers are trying to figure out why. The post Flares from the Milky Way's Supermassive Black Hole appeared first on Sky & Telesco...

 2021-04-09 09:31 

Sky & Telescope

This Week's Sky at a Glance, April 9 17...

Arcturus ascends in the east as Sirius sinks in the southwest. Orion tilts further as the Dipper rides high. And this week Mars threads the horntips of Taurus, closely followed by the crescent Moon. The post This Week's Sky at a Glance, April 9 17 app...

 2021-04-08 12:00 

Sky & Telescope

T3 Years Until the 2024 Total Solar Eclipse...

The countdown has begun to a special total solar eclipse that will cross Mexico, the U.S. and Canada on April 8, 2024. The post T3 Years Until the 2024 Total Solar Eclipse appeared first on Sky & Telescope ....

 2021-04-07 16:33 

Sky & Telescope

Make the Most of Comet ATLAS...

Bright comets will be scarce this year, but you can see one of the better ones this month as it races from Aquila to Canes Venatici. In other news, a new, bright nova has flared in Sagittarius. The post Make the Most of Comet ATLAS appeared first on Sky &...

 2021-04-06 20:25 

Sky & Telescope

Seeking the Origins of Galactic Stellar Streams...

A recent study has identified the origins of many of the long streams of stars that encircle the Milky Way. These streams may contain hints about our galaxy's past. The post Seeking the Origins of Galactic Stellar Streams appeared first on Sky & Teles...

 2021-04-05 12:00 

Sky & Telescope

Discover the Night: International Dark Sky Week Is Here!...

Light pollution is insidious in today's world. This International Dark Sky Week, become inspired to see what you can do to raise awareness. The post Discover the Night: International Dark Sky Week Is Here! appeared first on Sky & Telescope ....

 2021-04-02 15:13 

Sky & Telescope

First Look at 2021's First Solar Eclipse...

June 10th's annular eclipse of the Sun has a path that crosses southern Canada and the North Pole but will be a challenge to see. The post First Look at 2021's First Solar Eclipse appeared first on Sky & Telescope ....

 2021-04-02 13:56 

Sky & Telescope

Tibet Observatory Confirms Existence of Galactic PeVatrons...

A Tibetan cosmic-ray observatory has discovered high-energy particle accelerators within our galaxy. The post Tibet Observatory Confirms Existence of Galactic PeVatrons appeared first on Sky & Telescope ....

 2021-04-02 09:08 

Sky & Telescope

This Week's Sky at a Glance, April 2 10...

Winter stars in the west are giving way to spring stars in the east, while little Mars shines on. Meanwhile, the waning Moon passes under Jupiter and Saturn at dawn. The post This Week's Sky at a Glance, April 2 10 appeared first on Sky & Telescope ....

 2021-04-01 15:07 

Sky & Telescope

Cakes, Cats, and Stars — Astro April Fools...

Astronomers turn their attention to the true puzzles of the universe: cats, Jaffa Cakes, and the coming planetblack hole apocalypse. The post Cakes, Cats, and Stars — Astro April Fools appeared first on Sky & Telescope ....

 2021-04-01 11:00 

Sky & Telescope

April: Follow the Moon...

To learn "what's up" at night during April, download Sky Tour — an engaging narrated guide to the planets, stars, and constellations now visible. The post April: Follow the Moon appeared first on Sky & Telescope ....

 2021-03-31 19:00 

Sky & Telescope

Mutual Event Season Heats Up at Jupiter...

Jupiter is usually the one occulting and eclipsing the Galilean moons, but this observing season the moons also eclipse and occult one another. The post Mutual Event Season Heats Up at Jupiter appeared first on Sky & Telescope ....

 2021-03-31 17:59 

Sky & Telescope

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. The post Bits of Theia Might Be in Earth's Mantle appeared first on Sky & Telescope ....

 2021-03-30 20:33 

Sky & Telescope

Interstellar Comet Was Pristine Sample of Planet Formation...

New analysis shows that Comet 2I/Borisov, which zipped nearest the Sun in late 2019, was unlike any comet we've seen before. The post Interstellar Comet Was Pristine Sample of Planet Formation appeared first on Sky & Telescope ....

 2021-03-30 01:05 

Sky & Telescope

Spotting a Faint Escaping Atmosphere...

Low-density exoplanets orbiting close to their host stars tend to lose their atmosphere. Now, astronomers can measure how fast it disappears. The post Spotting a Faint Escaping Atmosphere appeared first on Sky & Telescope ....

 2021-03-27 17:26 

Sky & Telescope

Asteroid Apophis Will Miss Earth in 2068...

Radar measurements taken early this month rule out any chance of a collision with Apophis over the next 100 years. The post Asteroid Apophis Will Miss Earth in 2068 appeared first on Sky & Telescope ....

 2021-03-26 14:41 

Sky & Telescope

Jupiter's Great Red Spot Gets Smaller — But Stronger...

"Flakes" coming off the Great Red Spot have had some wondering if this epic storm is coming to an end. But observations and computer modeling show it's only getting stronger. The post Jupiter's Great Red Spot Gets Smaller — But Stron...

 2021-03-26 08:34 

Sky & Telescope

This Week's Sky at a Glance, March 26 April 3...

Fading Mars glows above orange Aldebaran high in the west after dark. Orion tilts into his spring posture, with his belt horizontal. Arcturus climbs up in the east. The post This Week's Sky at a Glance, March 26 April 3 appeared first on Sky & Telesco...

 2021-03-25 16:44 

Sky & Telescope

Join Us in Planning for the Next "Great American Eclipse"...

Are you a solar eclipse enthusiast with an organizational bent? An upcoming virtual workshop geared toward planning for the 2023 and 2024 events could be just the thing for you. The post Join Us in Planning for the Next "Great American Eclipse" ap...

 2021-03-24 16:57 

Sky & Telescope

Astronomers Detect Strong Magnetic Fields Around M87's Black Hole...

Event Horizon Telescope data support the idea that magnetic fields control how black holes feed and grow. The post Astronomers Detect Strong Magnetic Fields Around M87's Black Hole appeared first on Sky & Telescope ....

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