Astronomy
Galileo L14 liftoff on Ariane 6
On 17 December, two new Galileo satellites lifted off from Europe’s Spaceport in French Guiana aboard an Ariane 6 rocket. This marked the 14th launch for Europe’s satellite navigation operational satellite programme, reinforcing Europe’s resilience and autonomy.
The European Space Agency (ESA) is responsible for carrying out the Galileo launch with Arianespace on behalf of the European Commission. The Galileo satellites were manufactured by OHB, under contract with ESA. Once in orbit, the EU Agency for the Space Programme (EUSPA) will bring the satellites into service and oversee their operation.
The flight, designated VA266, was the first launch of Galileo satellites on Europe’s newest heavy-lift launcher Ariane 6.
Ancient Bees Burrowed Inside Bones, Fossils Reveal
Bones of now extinct species became a haven for bee babies thousands of years ago, scientists report in a first-of-its-kind discovery
Scientists Map the Sun’s Magnetic “Surface”
Where does the Sun end and the solar wind begin? Scientists have mapped the dynamic magnetic edge that bounds our star.
The post Scientists Map the Sun’s Magnetic “Surface” appeared first on Sky & Telescope.
Peekaboo!
The Arctic Is in Dire Straits, 20 Years of Reporting Show
The Arctic has changed dramatically in the past 20 years, a new report shows, as temperatures skyrocket and ice rapidly melts
Harsh Flu Season May Be Driven by New Variant K
A novel influenza variant called subclade K appears to be driving an uptick in cases and hospitalizations throughout the U.S. and other countries
The First Alien Civilization We Encounter Will Be Extremely Loud
When we gaze up at the night sky, we assume that what we're seeing is a representative population of similar stars at similar distances. But it's not. The stars we see are a mixture of massive and small, distant and near. In fact, we can't even see our closest neighbour, Proxima Centauri. We see these stars because they have large observational signals, and that illustrates one of the problems in astronomy.
RFK, Jr.–Backed Lyme Disease Conspiracy Theory May Be Probed under New Bill
President Donald Trump is expected to sign a defense bill this week that orders an investigation into whether the U.S. military bioengineered Lyme disease
The Nancy Grace Roman Space Telescope Will Teach Us A Lot More About Cosmic Voids
The Large-Scale Structure of the Universe features massive filaments where galaxy clusters and superclusters reside. In between these filaments are cosmic voids, vast regions that are nearly empty. The Nancy Grace Roman will map and study 80,000 of these voids to place constraints on Dark Energy drives the expansion of the Universe.
First image from Sentinel-6B extends sea-level legacy
Copernicus Sentinel-6B, launched last month, has reached its orbit and delivered its first set of data, which show variations in sea level in the North Atlantic Ocean. This data underlines how the mission will continue to strengthen the long-term reference record of sea levels, a key parameter of climate change.
Scientists Devise New Plan to Study the Most Exciting Rock on Mars
New laboratory studies could shed light on a rock containing potential signs of alien life that’s stranded on Mars
Math Puzzle: Wrangle the Rectangles
Sort out a rectangle tangle in this math puzzle
How to See Interstellar Comet 3I/ATLAS as It Swings by Earth One Last Time
This week marks the last chance for backyard astronomers to see interstellar Comet 3I/ATLAS before it races on its journey back to outer space
Astronomers Snap a Rare Photo of a Super-Jupiter with Two Suns
If you read enough articles about planets in binary star systems, you’ll realize almost all of them make some sort of reference to Tatooine, the fictional home of Luke Skywalker (and Darth Vader) in the Star War saga. Since that obligatory reference is now out of the way, we can talk about the new “super-Jupiter” that researchers from two separate research teams, including one at Northwestern University and one at the University of Exeter, simultaneously found in old data from the Gemini Planet Imager (GPI).
Crash clock says satellites in orbit are three days from disaster
Crash clock says satellites in orbit are three days from disaster
These Orcas Are on the Brink—And So Is the Science That Could Save Them
Inside the desperate rush to save the southern resident killer whales
Global Warming Could Skew Reptile Sex Ratios and Lead to Extinctions
The sex of many turtles, crocodilians, and other reptiles is determined by the temperature at which their eggs incubate. Global warming could doom them
Heart and Kidney Diseases, plus Type 2 Diabetes, May Be One Illness Treatable with Ozempic-like Drugs
These three disorders could really be “CKM syndrome,” which can be treated with drugs like Ozempic
