science

LEDA 1313424: The Bullseye Galaxy

The giant galaxy cataloged as LEDA 1313424 is about two and a half times the size of our own Milky Way. Its remarkable appearance in this recently released Hubble Space Telescope image strongly suggests its nickname "The Bullseye Galaxy".

@[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] #space #science #nasa #astronomy

Summary

Australian researchers have successfully created the first kangaroo embryo using in-vitro fertilization (IVF), a breakthrough that could aid in conserving endangered marsupials.

Led by University of Queensland’s Andres Gambini, the research builds on reproductive techniques used in livestock and helps scientists understand marsupial development.

While kangaroos aren’t endangered, Australia has the highest rate of mammal extinctions. The IVF method could help preserve species like koalas and Tasmanian devils by freezing embryos for future conservation efforts.

Scientists emphasize this is an early but promising step.

Functional Resilience in Aging Hematopoietic Stem Cells

https://medium.com/biohackers-media/functional-resilience-in-aging-hematopoietic-stem-cells-e9ae228f1bf7?sk=30f7c87057638a1ea92f3c878f87c3bd

#health #science #biology @[email protected] @[email protected] @[email protected] @[email protected] @[email protected]

This is a rather long, 15-minute read opinion piece by Derek Lowe from Science News. Regarding... whatever is happening to science in the US. Worth a read if you are interested in this topic, but not directly "science" per-se.

IC 2574: Coddington's Nebula

Grand spiral galaxies often seem to get all the glory, flaunting their young, bright, blue star clusters in beautiful, symmetric spiral arms. But small, irregular galaxies form stars too. In fact dwarf galaxy IC 2574 shows clear evidence of intense star forming activity in its telltale reddish regions of glowing hydrogen gas.

@[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] #space #science #nasa #astronomy

Comet G3 ATLAS Setting over a Chilean Hill

Where is Comet ATLAS going? In the featured time-lapse video, the comet is not itself moving very much, but the Earth's rotation makes it appear to be setting over a hill. The Comet C/2024 G3 (ATLAS) sequence was captured with an ordinary camera on January 22 from the Araucanía Region in central Chile.

@[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] #space #science #nasa #astronomy

The Bullseye galaxy is 250,000 light-years across, nearly two-and-a-half times larger than our 100,000 light-year-wide Milky Way. The galaxy is 567 million light-years from Earth in the constellation Pisces.

The Grand Canyon in Arizona got carved by water over millions of years of slow but steady erosion. Two similarly-sized canyons on the moon got carved by flying rocks in about ten minutes.

That's because these two canyons formed in the wake of an asteroid or comet smashing into the moon, a crash that sent streaks of rocky debris flying at incredible speeds, according to a new analysis in the journal Nature Communications.

"This was a dramatic impact that was followed by a series of smaller impact events that excavated these canyons in, you know, roughly 10 minutes," says David Kring with the USRA Lunar and Planetary Institute in Houston.

Summary

A new study reveals that the Greenland ice sheet is cracking faster than ever due to climate change.

Researchers analyzed 8,000 high-resolution satellite maps from 2016–2021 and found a rapid increase in the size and depth of crevasses.

Ice sheet acceleration, driven by ocean warming, has contributed to 14mm of sea level rise since 1992.

Scientists warn that dynamic instabilities could lead to a meter of sea level rise by 2100. Improved projections are needed to plan for long-term climate adaptation.

Astronomers have discovered a giant radio galaxy (GRG) named Inkathazo, which has plasma jets measuring 3.3 million light-years—32 times the size of the Milky Way—using South Africa's MeerKAT telescope.

Anticrepuscular Rays: A Rainbow Fan over Spain - Astronomy Photo of The Day

In the featured image from Lekeitio in northern Spain, the Sun is behind the camera. The rainbow resulted from sunlight reflecting back from falling rain. Anticrepuscular rays result from sunlight, blocked by some clouds, going all the way around the sky, overhead, and appearing to converge on the opposite horizon -- an optical illusion. Rainbows by themselves can be exciting to see, and anticrepuscular rays a rare treat, but capturing them both together is even more unusual -- and can look both serene and surreal.

@[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] #space #science #nasa #astronomy #nature #astrophotography #nature #rainbow

Summary

The CDC has ordered its scientists to withdraw or pause pending research papers for review by the Trump administration, which is enforcing a ban on terms like “gender,” “LGBT,” and “pregnant person.”

An internal email revealed that all manuscripts, even those already accepted for publication, must comply.

Reuters confirmed the directive, which follows broader federal efforts to remove references to gender identity from government materials.

Critics warn the policy could hinder scientific integrity, as even demographic terms like “gender” may be censored.

Low-Mass Microquasars: Cosmic Ray Sources?

https://joshuniverse.medium.com/low-mass-microquasars-cosmic-ray-sources-e488a5427f6e?sk=b4ecc7f0cb8387c972f4da749b5b7334

@[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] @[email protected] #space #science #nasa #astronomy

Physicists at Brown University have made a groundbreaking discovery of a new type of quantum particle, which do not carry an overall charge and follow distinctive quantum rules. Its unexpected behaviors that could significantly advance our understanding of quantum physics.