NASA has confirmed that Voyager 2 has joined its twin to become only the second spacecraft to enter interstellar space – where the sun's flow of material and magnetic field no longer affect its surroundings. The slightly ...
It's the first time a visitor from another star system has been seen nearby. But what is it? An asteroid, a comet … or an alien artifact?
University of Sydney astronomers, working with international colleagues, have found a star system like none seen before in our galaxy.
What's the sound of a touchdown on Mars?
Hidden in a distant galaxy cluster collision are wisps of gas resembling the starship Enterprise—an iconic spaceship from the "Star Trek" franchise.
As an astrophysicist, probably the most common question I get asked is: "Are we alone in the universe and do aliens exist?"
Two outback radio telescopes synchronised to observe the same point of sky have discovered more about one of the universe 's most mysterious events in new research published today.
An approximately 14 million year old pulsar star that is the "slowest-spinning" of its kind ever identified has been discovered by a Ph.D. student from The University of Manchester.
A two-year cycle in the gamma-ray brightness of a blazar, a galaxy powered by a supermassive black hole, has been confirmed by 10 years of observations from NASA's Fermi Gamma-ray Space Telescope. The findings were announced ...