SUNSET: 
Did Astronomers Spot a Black Hole in Another Galaxy? Maybe Not
Astronomers might have spotted a stellar-mass black hole in another galaxy — but not everyone agrees with what they found.
A Near-Miss Total Lunar Eclipse
A near-total lunar eclipse will be widely visible across North America on the night of November 18–19. Dress warmly and go for it!
Russia Conducts Antisatellite Test; Space Station Crew Takes Cover
A Russian missile struck a defunct satellite early Monday morning, forcing International Space Station crew to shelter in place.
Has a Stray Piece of the Moon Become a Quasi-satellite of Earth?
A quasi-satellite of Earth, named Kamoʻoalewa, might actually be a chip off our Moon.
Did a Comet Explode Over South America 12,000 Years Ago?
Huge chunks and twisted slabs of dark glass are strewn across a patch of the Chilean Atacama Desert. Do they have a cosmic origin?
NASA Announces Drilling Site on the Moon
NASA has revealed the landing site for Intuitive Machines’ ambitious drilling mission, set to launch for the Moon in 2022.
Mariner 9: The Martian Semicentennial
A half century ago, Mariner 9 — our first orbiter at another planet — showed us the real Mars.
This Week's Sky at a Glance, November 12 – 20
Venus, Jupiter and Saturn highlight the dusk. Mercury and Mars are a dawn challenge. And get ready for the barely-almost-total eclipse of the Moon.
Under One Sky: Let's Address Light Pollution Together
Concerned about light pollution? Join a virtual conference this weekend that looks at ongoing global efforts to mitigate it.
Third Gravitational-Wave Catalog Released
The latest results from LIGO, Virgo, and KAGRA bring several key revelations, including that black holes tend to come with certain masses.
This Week's Sky at a Glance, November 5 – 13
In the evening sky the waxing Moon walks up past Venus, then Saturn and Jupiter day by day. And we're in the season of the Summer Triangle Effect.
Astronomers Announce Priorities for Next Decade
The National Academy of Science detailed the direction for astronomy and astrophysics today for the coming decade.
Close Companions Help Stars Make More Carbon
Massive stars can produce twice as much carbon when they have a close binary companion, according to a new study. The result is a small but important step in understanding the cosmic origin of elements.
Astronomers Dream Big, Consider Four Future Space Telescopes
The release of the Astro2020 Decadal Survey is imminent, in which four concepts compete to become NASA’s next flagship mission. From exo-Earths to X-rays, what will the future hold?
The Case for an Active Volcano on Venus
After decades of studying Venus, many questions remain about our planetary next-door neighbor. One question has particularly intrigued astronomers: which, if any, of Venus’s 1,600 volcanoes are still active?
Did We Find a Planet in Another Galaxy?
Astronomers using an innovative method have detected the signal of what could be an extragalactic exoplanet. But confirming its existence will be difficult.
November: A Flying Horse and Star Fish
With darkness coming earlier now, take advantage of November's clear evenings to explore the nighttime sky with our audio guided tour.
The Roots of Jupiter’s Great Red Spot Run Deep
NASA’s Juno mission has obtained measurements that finally say just how deep the Great Red Spot goes.
This Week's Sky at a Glance, October 29 – November 6
The moonless evenings this week offer three bright planets and deep-sky riches as deep as you can go. Meanwhile, the waning crescent Moon meets Mercury and Spica low in bright dawn.
The True Nature of the Candidate ET Signal From Proxima Centauri
Human-made interference, not extraterrestrial technology, is responsible for the first candidate "signal of interest" detected by the project Breakthrough Listen.
