Tuesday, March 3, 2026

Some Extremophiles Could Survive an Asteroid Impact on Mars, and the Dangerous Journey to Earth

Millions of craters of all sizes help define the Martian surface and tell a tale of millions of impacts. We know that some Mars rock has reached Earth after being blasted into space by an impact. New research shows that at least one type of extremophile can survive the impact, and the hazardous journey to another world. Image Credit: NASA/JPL/Arizona State University, R. Luk

Panspermia is the idea that life was spread from world to world somehow. New research shows that one type of Earthly extremophile can survive the extremely high pressure from asteroid impacts on Mars, be blasted into space, and maybe even survive the journey to Earth.



NASA Tests Prototype 3D Printed Titanium Antenna in Space

The 3D-Printed titanium spring deployed aboard the Mercury One spacecraft in orbit. Credit: Proteus Space

With a simple motion, a jack-in-the-box-like spring designed at NASA's Jet Propulsion Laboratory showed the potential of additive manufacturing, also known as 3D printing, to cut costs and complexity for futuristic space antennas. Called JPL Additive Compliant Canister (JACC), the spring deployed on the small commercial spacecraft Proteus Space's Mercury One on Feb. 3, 2026. An onboard camera captured a video of the spring popping out of its container as the spacecraft passed over the Pacific Ocean in low-Earth orbit.



The Coldest "Stars" in the Galaxy Might Actually Be Alien Megastructures

Relatistic representation of a Dyson swarm. Credit - Віщун / Wikimedia Commons

Ever since physicist Freeman Dyson first proposed the concept in 1960, the “Dyson sphere” has been the holy grail of techno-signature hunters. A highly advanced civilization could build a “sphere” (or, in our more modern understanding, a “swarm” of smaller components) around their host star to harvest its entire energy output. We know, in theory at least, that such a swarm could exist - but what would it actually look like if we were able to observe one? A new paper available in pre-print on arXiv, and soon to be published in Universe from Amirnezam Amiri of the University of Arkansas digs into that question - and in the process discloses the types of stars that are the most likely to find them around.



Monday, March 2, 2026

Astronomers Device a New Way to Measure Cosmic Expansion with Lensed Supernovae

A high-resolution image taken with the LBT in Arizona shows two galaxies in yellow-red. Surrounding them are five images of the same supernova caused by gravitational lensing. Credit & ©: SN Winny

Researchers in Munich have used the Large Binocular Telescope in Arizona to capture five images of one and the same supernova in a single picture. The gravity of two foreground galaxies has deflected the light from a supernova far in the background along different paths to Earth.



Tiny Dust Grains From Massive Stars: How the Smallest and Largest Are Linked

This artist's illustration shows the colliding stellar winds in WR 112, a binary star containing a Wolf-Rayet star and an OB-type star. The colliding winds created copious amounts of dust, which eventually finds its way into the interstellar medium, where it's taken up in the next round of star and planet formation. Surprisingly, the dust has two separate populations of dust grains with different sizes. Image Credit: NSF/AUI/NSF NRAO/M. Weiss

Star dust is at the root of everything that exists, and is produced in large quantities around Wolf-Rayet binaries. But there are some puzzling observations of dust grain sizes that require explanations. New research shows why different observations have found different dust grain sizes.



Sunday, March 1, 2026

Laser-Based 3D Printing Could Build Future Bases on the Moon

A laser 3D printing method, tested by researchers at OSU, could lead to resilient, stable structures on the Moon. Credit: ESA

Simulated lunar dirt can be turned into extremely durable structures, potentially paving the way to more sustainable and cost-effective space missions, a new study suggests. Using a special laser 3D printing method, researchers melted fake lunar soil—a synthetic version of the fine dusty material on the moon surface, called regolith simulant—into layers and fused it with a base surface to manufacture small, heat-resistant objects.



Europe's Answer to Starship

SpaceX Starship ignition during its launch on IFT-5 (Credit : Steve Jurvetson)

SpaceX's Starship is the most powerful rocket ever built and it may be about to change everything. But researchers at the German Aerospace Centre have been asking a question: does Europe have an answer? Their new study, built on meticulous analysis of Starship's own flight data, suggests the answer is yes although it will require a fundamentally different approach, and a willingness to think differently.