Scientists discover one of the oldest stars ever, with almost no iron
Astronomers have discovered one of the oldest and most primitive stars ever found, offering a rare glimpse into the early universe.
The star, named PicII-503,...
Nearby galaxies suggest the universe may be expanding more slowly than thought
For decades, scientists have tried to measure how fast the universe is expanding.
This expansion rate is known as the Hubble constant, and it plays...
Astronomers discover powerful “cosmic laser” shining from halfway across the universe
Astronomers using a powerful radio telescope in South Africa have discovered an extraordinary cosmic signal coming from more than 8 billion light-years away.
The signal...
Astronomers discover alcohol-rich interstellar comet passing through our solar system
Astronomers studying a rare interstellar comet have discovered something surprising: it contains unusually large amounts of methanol, a type of alcohol.
The discovery offers a...
Why are some stars always visible while others come and go with the seasons
As a space scientist, every time I go outside with my family, I tell my children to look up at the sky.
The front door...
Can life grow on the moon or Mars? New experiments offer surprising clues
As scientists plan future missions to the Moon and Mars, one major question remains: could humans grow food or even support life on these...
What’s inside a neutron star? New study points to answers in gravitational waves
Neutron stars are among the most mysterious objects in the universe.
Formed when massive stars collapse after exploding as supernovae, these incredibly dense objects pack...
Scientists decode ancient magnetic signals in asteroid Ryugu samples
Scientists studying tiny samples from the asteroid Ryugu have uncovered new clues about the magnetic environment that existed when the solar system first formed.
The...
How old is the universe? The oldest stars in the Milky Way may hold...
How old is the universe?
Scientists have long tried to answer this question, but different measurement methods have produced conflicting results.
Now, researchers from the University...
The coldest ‘stars’ in the galaxy might actually be alien megastructures
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...