An alien star has now been discovered to have an extra planet that astronomers so far cannot explain. A fourth planet has been imaged orbiting the bright, very young star HR 8799, nearly 130 ...

British space scientist Dame Maggie Aderin–Pocock is sure that life is present on some other planet in the universe. Citing ...

Like cosmic sleuths with a time machine, astronomers conducted a thorough re-analysis of old data collected by NASA's Hubble Space Telescope in 1998, and found visual evidence for two alien planets ...