Friday, March 6, 2026

VLT Image Captures a "Cosmic Hawk" Spanning its Wings.

ESO's picture of the week shows a "cosmic hawk" and countless young stars in the RCW 36 nebula. Credit: ESO/A. R. G. do Brito do Vale et al. (2026).

Today’s Picture of the Week, taken with ESO’s Very Large Telescope (VLT), seems to have captured a cosmic hawk as it spans its wings.



The 4.6-Billion-Year-Old Tape Recorder Hidden Inside Asteroid Dust

Images of the surface of Ryugu taken by the navigation camera on Hayabusa-2. Credit - JAXA, Chiba Institute of Technology, University of Tokyo, Kochi University, Rikkyo University, Nagoya University, Meiji University, University of Aizu, AIST

Asteroids are critical to unlock our understanding of the early solar system. These chunks of rock and dust were around at the very beginning, and they haven’t been as modified by planetary formation processes as, say, Earth has been. So scientists were really excited to get ahold of samples from Ryugu when they were returned by Hayabusa-2 a few years ago. However, when they started analyzing the magnetic properties of those samples, different research groups came up with different answers. Theorizing those conflicting results came from small sample sizes, a new paper recently published in JGR Planets from Masahiko Sato and their colleagues at the University of Tokyo used many more samples to finally dig into the magnetic history of these first ever returned asteroid samples.



Thursday, March 5, 2026

Mars Express Images Reveal Mars' Pockmarked Surface

A slice of Arabia Terra, a large plain in Mars’s ancient highlands, imaged by the Mars Express' High Resolution Stereo Camera (HRSC). Credit: ESA/DLR/FU Berlin

Craters, craters, and yet more craters: this snapshot from ESA’s Mars Express is packed full of them, each as fascinating as the last.



Astronomers Using MeerKAT Spot a Cosmic Laser Halfway Across the Universe

A megamaser acts as an astronomical laser that beams out microwave emission rather than visible light. Credit: ESA/Hubble

Astronomers using the MeerKAT radio telescope in South Africa have discovered the most distant hydroxyl megamaser ever detected. It is located in a violently merging galaxy more than 8 billion light-years away, opening a new radio astronomy frontier.



Phew! NASA Rules Out Asteroid Smashup on the Moon in 2032

An animated image shows how NASA has refined the probability of a 2032 lunar impact by asteroid 2024 YR4. The first image shows the range of the asteroid's potential locations based on observations made in the spring of 2025 (4.3% impact probability), and the second image shows the potential locations based on observations made in February 2026 (zero percent impact probability). Credit: NASA / JPL Center for Near-Earth Object Studies.

Here’s one less thing to worry about — or to look forward to: NASA has ruled out any chance that an asteroid called 2024 YR4 will hit the moon in 2032.



Wednesday, March 4, 2026

Illinois and UChicago Physicists Develop a New Method for Measuring Cosmic Expansion

The expansion of the cosmos since the time of the Big Bang. Credit: NASA

A team of astrophysicists, cosmologists, and physicists has developed a novel way to compute the Hubble constant using gravitational waves. As our capability to observe gravitational waves improves in the future, this new method could be used to make even more accurate measurements of the Hubble constant, bringing scientists closer to resolving the Hubble tension.



What Goes On Inside A Massive Star Before It Explodes As A Supernova?

This artist's illustration shows a red supergiant star exploding as a supernova. Type II supernovae come from massive stars that become red supergiants late in life. New research explores the inner workings of these stars, and why some of their light curves are so different from one another. Image Credit: ESO/L. Calçada

When people think of supernova explosions, they're most-often thinking of Type II core-collapse supernovae, where a massive star becomes a red supergiant before collapsing on itself and exploding. New research uncovers what's going on inside the star before it explodes, and explains why SNe light curves can be different from one another.