The Stars in Other Galaxies are Generally Heavier Than the Milky Way’s Stars
How many of what kinds of stars live in other galaxies? It seems like a simple question, but it’s notoriously…
Even if you can’t see Auroras, You Can Sometimes Hear Them. Here’s What They Sound Like
Auroras are some of Earth’s most spectacular natural phenomena. Travelers come from far and wide to see the incredible Northern…
NASA Will Rent Future Spacesuits From Longtime Supplier and Newcomer
NASA has struck deals with two commercial teams to provide the spacesuits destined for use when astronauts return to the…
Dark Stars: The First Stars in the Universe Could Have Been Powered by Annihilating Dark Matter
Dark matter doesn’t really do much of anything in the present-day universe. But in the early days of the cosmos…
Compare Sand Dunes Across the Solar System, From Venus to Pluto
A new study explains how bodies as different as Venus, Earth, Mars, Pluto, Titan, and Triton can all have sand…
Could we Detect Dark Matter’s Annihilation Within Globular Clusters?
A team of astronomers studied two nearby globular clusters, 47 Tucanae and Omega Centauri, searching for signals produced by annihilating…
Why are Uranus and Neptune Different Colors? Haze
Way back in the late 1980s, the Voyager 2 spacecraft visited Uranus and Neptune. During the flybys, we got to…
Hubble Sees Two Spiral Galaxies Together
Two peculiar spiral galaxies are in the latest image release from the Hubble Space Telescope. The two galaxies, collectively known…
ESA's Juice Mission is Fully Integrated and Ready for Testing. Soon it'll fly to Space on a Mission to Jupiter's Moons
Now less than one year until the projected launch date, ESA’s JUICE mission is in the final phases of development.…
Civilizations Don’t Even Need Space Ships to Migrate From Star System to Star System
In about 5 billion years, the Sun will leave the main sequence and become a red giant. It'll expand and…