An intriguing alternative view is that dark matter is made of black holes formed during the first second of our universe's existence, known as primordial black holes. A scientist suggests that this interpretation aligns with our knowledge of cosmic infrared and X-ray background glows and may explain the unexpectedly high masses of merging black holes detected last year.
An international team of scientists has detected and confirmed the faintest early-universe galaxy ever. Using the W. M. Keck Observatory on the summit on Mauna Kea in Hawaii, the researchers detected the galaxy as it was 13 billion years ago.
Astronomers have detected a rare gas 4000 light years away from Earth. The discovery, made using the largest antenna of NASA's Madrid Deep Space Communication Complex, could help scientists to understand more about the history of this important element.
The search for planets orbiting other stars in our galaxy has revealed an extraordinary family of planets whose orbits are so carefully timed that they provide long-term stability for their planetary system.
Sorry, E.T. lovers, but the results of a new study make it far less likely that KIC 8462852, popularly known as Tabby's star, is the home of industrious aliens who are gradually enclosing it in a vast shell called a Dyson sphere.
Earlier this year scientists presented evidence for Planet Nine, a Neptune-mass planet in an elliptical orbit 10 times farther from our Sun than Pluto. Since then theorists have puzzled over how this planet could end up in such a distant orbit.
Analysis of exploding star's light curve and color spectrum reveal spectacular demise of one of the closest supernova to Earth in recent years; its parent star was so big it's radius was 200 times larger than our sun.