Microgravity experienced during spaceflight poses potential health risks to astronauts' cardiovascular systems. Determining how to mitigate these health risks is challenging, as countermeasures are tested in Earth's gravity. ...
Space Exploration
51 minutes ago
0
0
Let's rewind the clock back…oh, I don't know, let's say a hundred years. It was 1917, and Einstein had just developed his general theory of relativity. It was a masterpiece, giving us our modern-day view of the gravitational ...
Astronomy
7 hours ago
0
33
The international LIGO-Virgo-KAGRA Collaboration has completed the fourth observation campaign (called O4) of the international network of gravitational wave detectors. Launched in May 2023, the campaign ends after a period ...
Astronomy
12 hours ago
0
2
All around us are elements forged in stars, from the nickel and copper in coins to the gold and silver in jewelry. Scientists have a good understanding of how these elements form: In many cases, a nucleus heavier than iron ...
Astronomy
15 hours ago
0
25
Our search for exoplanets is focused on Milky Way stars. It's been successful, with more than 6,000 detected so far. Scientists are even beginning to move beyond mere detections, and working on characterizing other characteristics ...
Astronomy
16 hours ago
0
7
All motion is relative. That simple fact makes tracking the motion of distant objects outside our galaxy particularly challenging. For example, there has been a debate among astronomers for decades about the path that one ...
Astronomy
16 hours ago
0
21
