EarthSky News:
- Comet ATLAS G3 in the sunset’s glow: Pics here!by Kelly Kizer Whitt on January 21, 2025 at 2:46 pm
Comet ATLAS G3 is near the sun just after sunset until about January 20 for those in the Northern Hemisphere. Here are some of the first pics of the comet! The post Comet ATLAS G3 in the sunset’s glow: Pics here! first appeared on EarthSky.
- Farewell, Gaia! Now check out this animationby Kelly Kizer Whitt on January 21, 2025 at 1:00 pm
ESA's Gaia spacecraft has now ended its operations, after measuring some 2 billion Milky Way objects. A new animation shows some of its greatest new insights. The post Farewell, Gaia! Now check out this animation first appeared on EarthSky.
- Leo P and a host of other galaxiesby Deborah Byrd on January 21, 2025 at 12:06 pm
Researchers used the Webb Space Telescope to reveal patterns of star formation in a dwarf galaxy, Leo P. The image captured many other galaxies too. The post Leo P and a host of other galaxies first appeared on EarthSky.
- Andromeda galaxy: Hubble’s largest photomosaic yetby EarthSky Voices on January 21, 2025 at 11:50 am
Astronomers have created the largest photomosaic of the Andromeda galaxy yet using Hubble data. The image helps trace the hidden history of Andromeda. The post Andromeda galaxy: Hubble’s largest photomosaic yet first appeared on EarthSky.
Universe Today:
- Habitable Worlds Could Have Formed Before the First Galaxiesby Evan Gough on January 21, 2025 at 12:21 am
What came first, galaxies or planets? The answer has always been galaxies, but new research is changing that idea. Could habitable planets really have formed before there were galaxies? In the immediate aftermath of the Big Bang, there were no heavy elements. There was only hydrogen, which comprised about 75% of the mass, and helium, … Continue reading "Habitable Worlds Could Have Formed Before the First Galaxies" The post Habitable Worlds Could Have Formed Before the First Galaxies appeared first on Universe Today.
- Hubble Takes a 2.5 Gigapixel Image of Andromedaby Evan Gough on January 20, 2025 at 9:00 pm
The Andromeda galaxy is our closest galactic neighbour, barring dwarf galaxies that are gravitationally bound to the Milky Way. When conditions are right, we can see it with the naked eye, though it appears as a grey smudge. It’s the furthest object in the Universe that we can see without telescopic help. The Hubble Space … Continue reading "Hubble Takes a 2.5 Gigapixel Image of Andromeda" The post Hubble Takes a 2.5 Gigapixel Image of Andromeda appeared first on Universe Today.
- Black Holes are Spinning Faster Than Expectedby Carolyn Collins Petersen on January 20, 2025 at 7:15 pm
There’s a Universe full of black holes out there, spinning merrily away—some fast, others more slowly. A recent survey of supermassive black holes reveals that their spin rates reveal something about their formation history. If you want to describe a supermassive black hole’s characteristics, there are two important numbers to use. One is its mass … Continue reading "Black Holes are Spinning Faster Than Expected" The post Black Holes are Spinning Faster Than Expected appeared first on Universe Today.
APOD: Astronomy Picture of the Day:
- Post Titleon January 21, 2025 at 10:00 pm
What's that in the sky?
- Post Titleon January 21, 2025 at 10:00 pm
Why does Comet ATLAS have such colorful tails?
- Post Titleon January 21, 2025 at 10:00 pm
What would it look like to land on Saturn's moon Titan?
NASA Breaking News:
- NASA Marshall Invites Media to Local Day of Remembrance Eventby Beth Ridgeway on January 21, 2025 at 8:28 pm
NASA’s Marshall Space Flight Center in Huntsville, Alabama, invites media to attend its observance of the agency’s Day of Remembrance at 9:30 a.m. CST Thursday, Jan. 23, in the lobby of Building 4221. Day of Remembrance honors the members of the NASA family who lost their lives while furthering the cause of exploration and discovery.
- 60 Years Ago: Uncrewed Gemini 2 Paves the Way for the First Crewed Missionby John J. Uri on January 21, 2025 at 6:52 pm
On Jan. 19, 1965, Gemini 2 successfully completed the second of two uncrewed test flights of the spacecraft and its Titan II booster, clearing the way for the first crewed mission. The 18-minute suborbital mission achieved the primary goals of flight qualifying the Gemini spacecraft, especially its heat shield during a stressful reentry. Recovery forces
- Astronauts Set to Swab the Exterior of Station for Microbial Lifeby Christine Giraldo on January 21, 2025 at 6:00 pm
Astronauts are scheduled to venture outside the International Space Station to collect microbiological samples during crew spacewalks for the ISS External Microorganisms experiment. This investigation focuses on sampling at sites near life support system vents to examine whether the spacecraft releases microorganisms, how many, and how far they may travel. This experiment could help researchers
- How New NASA, India Earth Satellite NISAR Will See Earthby Naomi Hartono on January 21, 2025 at 5:22 pm
Set to launch within a few months, NISAR will use a technique called synthetic aperture radar to produce incredibly detailed maps of surface change on our planet. When NASA and the Indian Space Research Organization’s (ISRO) new Earth satellite NISAR (NASA-ISRO Synthetic Aperture Radar) launches in coming months, it will capture images of Earth’s surface
- NASA Welcomes Finland as Newest Artemis Accords Signatoryby Tiernan P. Doyle on January 21, 2025 at 4:29 pm
With Finland’s signing of the Artemis Accords on Tuesday, NASA celebrates the 53rd nation committing to the safe and responsible exploration of space that benefits humanity. The signing ceremony took place on the margins of the Aalto University’s Winter Satellite Workshop 2025 in Espoo, Finland. “Today, Finland is joining a community of nations that want
Space Station News:
- Astronauts Set to Swab the Exterior of Station for Microbial Lifeby Christine Giraldo on January 21, 2025 at 6:00 pm
Astronauts are scheduled to venture outside the International Space Station to collect microbiological samples during crew spacewalks for the ISS External Microorganisms experiment. This investigation focuses on sampling at sites near life support system vents to examine whether the spacecraft releases microorganisms, how many, and how far they may travel. This experiment could help researchers
- Suni Williams Conducts Spacewalkby Monika Luabeya on January 21, 2025 at 4:25 pm
NASA astronaut Suni Williams is seen outside the International Space Station during the Jan. 16, 2025, spacewalk where she and fellow NASA astronaut Nick Hague replaced a rate gyro assembly that helps maintain the orientation of the orbital outpost. It was the fourth spacewalk for Hague and the eighth for Williams. Williams and Hague also
- Station Science Top News: Jan. 17, 2025by Sumer Loggins on January 21, 2025 at 4:15 pm
Insights into metal alloy solidification Researchers report details of phase and structure in the solidification of metal alloys on the International Space Station, including formation of microstructures. Because these microstructures determine a material’s mechanical properties, this work could support improvements in techniques for producing coatings and additive manufacturing or 3D printing processes. METCOMP, an ESA
NASA Universe:
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Sky & Telescope Observing News:
- Comet ATLAS Caught in the Act of Disintegrationby Bob King on January 20, 2025 at 8:34 pm
Nucleus falls to pieces, but the comet continues on! The post Comet ATLAS Caught in the Act of Disintegration appeared first on Sky & Telescope.
- This Week's Sky at a Glance, January 17 – 26by Alan MacRobert on January 17, 2025 at 2:17 pm
Brilliant Mars, just past opposition, outshines its neighbors Pollux and Castor in the east. Venus and Saturn pull apart in the southwest. Orion dominates the high southeast after dinnertime, with searing white Sirius sparkling below it. The post This Week's Sky at a Glance, January 17 – 26 appeared first on Sky & Telescope.
- Grab Your Binoculars for Comet ATLAS's Brief Sunset Showby Bob King on January 15, 2025 at 5:08 pm
Northern Hemisphere skywatchers can now spot this horizon-skirting comet. It's a beauty. The post Grab Your Binoculars for Comet ATLAS's Brief Sunset Show appeared first on Sky & Telescope.
- See January's "Planet Parade," plus Comet ATLAS Now Visible in Daylightby Bob King on January 13, 2025 at 2:15 pm
With lots of planets and a bright comet vying for our attention, January is an exciting month for skywatchers! The post See January's "Planet Parade," plus Comet ATLAS Now Visible in Daylight appeared first on Sky & Telescope.
- This Week's Sky at a Glance, January 10 – 19by Alan MacRobert on January 10, 2025 at 10:13 am
After occulting the Pleiades last Thursday, the Moon will occult Mars for the continental U.S. on Monday evening, January 13th. In the southwestern twilight, Saturn and Venus draw together toward conjunction. Jupiter shines high. The post This Week's Sky at a Glance, January 10 – 19 appeared first on Sky & Telescope.
Sky & Telescope – Explore the Night with Bob King:
- Comet ATLAS Caught in the Act of Disintegrationby Bob King on January 20, 2025 at 8:34 pm
Nucleus falls to pieces, but the comet continues on! The post Comet ATLAS Caught in the Act of Disintegration appeared first on Sky & Telescope.
- Grab Your Binoculars for Comet ATLAS's Brief Sunset Showby Bob King on January 15, 2025 at 5:08 pm
Northern Hemisphere skywatchers can now spot this horizon-skirting comet. It's a beauty. The post Grab Your Binoculars for Comet ATLAS's Brief Sunset Show appeared first on Sky & Telescope.
- See January's "Planet Parade," plus Comet ATLAS Now Visible in Daylightby Bob King on January 13, 2025 at 2:15 pm
With lots of planets and a bright comet vying for our attention, January is an exciting month for skywatchers! The post See January's "Planet Parade," plus Comet ATLAS Now Visible in Daylight appeared first on Sky & Telescope.
- Comet ATLAS (C/2024 G3) — Catch it if You Canby Bob King on January 8, 2025 at 5:34 pm
Grab your binoculars for a chance to see Comet ATLAS as it plunges toward perihelion. The post Comet ATLAS (C/2024 G3) — Catch it if You Can appeared first on Sky & Telescope.
- Mars Extravaganza — Occultation and Opposition Rolled into One!by Bob King on January 8, 2025 at 2:47 pm
Mars is big and bright again! In a spectacular preview to its upcoming opposition, the full Moon occults the Red Planet on January 13th. The post Mars Extravaganza — Occultation and Opposition Rolled into One! appeared first on Sky & Telescope.
Stardate Podcast: Individually, the stars of Orion’s Belt aren’t that impressive. We pay attention to them mainly because they’re tightly grouped – a short line that’s easy to pick out. But their appearance is wildly deceiving. The stars are among the most impressive in the entire galaxy. They have to be […] To the ancient Maya, the Orion Nebula was the fire of creation. The bright stars around it were the hearthstones that held the fire.
And they were on the right track. The nebula is a giant stellar nursery. It’s given birth to thousands of stars, with more still taking shape. And the […] The Sun is a middle-aged star. It’s been shining for about four and a half billion years, and it’s expected to keep on shining for billions of years more.
But some stars that are only a fraction of the Sun’s age are well into the final stages of life. These stars are much more massive than […] Venus and Saturn look a bit jaundiced. But they achieve their yellowish color in different ways.
Venus is the second planet from the Sun. It’s about the same size as Earth. It’s topped by a perpetual blanket of clouds. The clouds are made of sulfuric acid, so they give the planet a bright […] Astronomy is just like any other human endeavor. It can stir up controversy, hurt feelings – and feuds. One of its most famous feuds involved some of the giants of science – Isaac Newton, who formulated laws of gravity and motion, and Edmond Halley, the namesake of Comet Halley.
Newton and […]