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General Physics May 22, 2024

Researchers show how to use 'topological tweezers' to control active fluids

University of Michigan physicists have devised a way to manipulate active fluids, a type of fluid composed of individual units that can propel themselves independently, by taking advantage of topological defects in the fluids.

Planetary Sciences May 20, 2024

Astronomers determine Mars may face more potentially hazardous asteroids than Earth

A team of astronomers at Nanjing University has found evidence that Mars likely has more potentially hazardous asteroids in its path than Earth. In their study, posted on the arXiv preprint server, the group investigated ...

Astronomy May 10, 2024

Is dark matter's main rival theory dead? The Cassini spacecraft and other recent tests may invalidate MOND

One of the biggest mysteries in astrophysics today is that the forces in galaxies do not seem to add up. Galaxies rotate much faster than predicted by applying Newton's law of gravity to their visible matter, despite those ...

Astronomy May 8, 2024

A nebula that extends its hand into space

The Gum Nebula is an emission nebula almost 1400 light-years away. It's home to an object known as "God's Hand" among the faithful. The rest of us call it CG 4.

Astronomy May 3, 2024

Hungry, hungry white dwarfs: Solving the puzzle of stellar metal pollution

Dead stars known as white dwarfs, have a mass like the sun while being similar in size to Earth. They are common in our galaxy, as 97% of stars will eventually become white dwarfs. As stars reach the end of their lives, their ...

Space Exploration May 3, 2024

The Eta Aquarid meteor shower, debris of Halley's comet, peaks this weekend. Here's how to see it

The Eta Aquarid meteor shower, remnants of Halley's comet, peaks this weekend. And with just a waning crescent moon in the sky, it should be visible.

Astrobiology Apr 24, 2024

A NASA rover has reached a promising place to search for fossilized life on Mars

While we go about our daily lives on Earth, a nuclear-powered robot the size of a small car is trundling around Mars looking for fossils. Unlike its predecessor Curiosity, NASA's Perseverance rover is explicitly intended ...

Astronomy Apr 22, 2024

Doomed comet spotted near the sun during the April 8 total solar eclipse

A surprise appearance of a new comet made the April 8 total solar eclipse all the more memorable.

Space Exploration Apr 22, 2024

Meteor shower to peak today: Here's when and the best way to watch

One of the oldest known meteor showers is streaking through the sky above California. The Lyrid meteor shower was first recorded in 687 B.C. and has been studied for more than 2,000 years, according to NASA. The meteor shower ...

Astrobiology Apr 21, 2024

Crucial building blocks of life on Earth can more easily form in outer space, says new research

The origin of life on Earth is still enigmatic, but we are slowly unraveling the steps involved and the necessary ingredients. Scientists believe life arose in a primordial soup of organic chemicals and biomolecules on the ...

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