Scientists at Cornell University and the American Museum of Natural History have identified 2,034 nearby star-systems - within the small cosmic distance of 326 light-years - that could find Earth merely by watching our pale blue dot cross our sun.
We can't detect them yet, but radio signals from distant solar systems could provide valuable information about the characteristics of their planets.
New findings published this week in Physical Review Letters, Measurement of the Iron Spectrum in Cosmic Rays from 10--GeV/n to 2.0--TeV/n with the Calorimetric Electron Telescope on the International Space Station, suggest that cosmic ray nuclei of hydrogen, carbon and oxygen travel through the galaxy toward Earth in a similar way, but, surprisingly, that iron arrives at Earth differently.
New findings published this week in Physical Review Letters suggest that carbon, oxygen, and hydrogen cosmic rays travel through the galaxy toward Earth in a similar way, but, surprisingly, that iron arrives at Earth differently.
Abu Dhabi, UAE: Trans-Neptunian Objects, small objects that orbit the sun beyond Neptune, are fossils from the early days of the solar system which can tell us a lot about its formation and evolution.
When astronomers using NASA's Hubble Space Telescope uncovered an oddball galaxy that looked like it didn't have much dark matter, some thought the finding was hard to believe and looked for a simpler explanation.
Researchers using the Atacama Large Millimeter/submillimeter Array discovered a titanic galactic wind driven by a supermassive black hole 13.1 billion years ago.
When Betelgeuse, a bright orange star in the constellation of Orion, lost more than two-thirds of its brightness in late 2019 and early 2020, astronomers were puzzled.
Supermassive black holes, or SMBHs, are black holes with masses that are several million to billion times the mass of our sun.
The long relationships between stars and the planets around them - including the Sun and the Earth - may be even more complex than previously thought.