Dark matter influences the size of galaxies
Researchers simulated the effects of dark matter halos on galaxies and found that denser halos produced smaller galaxies.
Tag: astronomy
Searching for planets in a galaxy far away
Researchers surveyed over 20,000 stars thought to come from a nearby galaxy and found that no more than 1% harbored close-orbiting,…
Astronomers classify near-Earth asteroids
Researchers determined the sizes, rotational speeds, and chemical compositions of 39 asteroids orbiting the Sun near Earth. Many were…
How did Mars get its moons?
Astronomers calculated possible trajectories for small objects approaching Mars. They found that as many as 1 in 50 get captured in orbit,…
How do small galaxies get magnetic fields?
Astronomers showed that small galaxies orbiting larger galaxies become 2 to 8 times more magnetic after nearing their hosts.
Energetic winds from a distant X-ray source
A team of astronomers were studying GRS 1716-249, an object believed to host a black hole. A wind of gas flowing out of it can be seen in…
Using The Big Bang As A Ruler
Baryon acoustic oscillations, an artifact remaining from the Big Bang, can be used by scientists to measure cosmological distances…
Two Black Holes Made a Mega Black Hole!
1.76 billion light years away, two black holes smashed into one another, bearing one huge black hole the size of 53 suns. The explosion from…
Why is the Sun Yellow?
Jacob Haqq-Misra, Ravi Kopparapu, and Eric Wolf attempt to address this question in a recent paper titled "Why do we find ourselves around a…
The Deafening Sound of Neutron Stars Crashing Together
Large stars and planets in space have intense gravity. The gravity of these large celestial bodies is so strong, that they actually warp the…