A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

The Sun will someday die. This will happen when it runs out of hydrogen fuel in its core and can no longer produce energy through nuclear fusion as it does now. The death of the Sun is often thought ...

Astronomers have discovered an alien world that defies every planetary rule with its massive size, low density, and tilted ...

An international team of astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) and retired Spitzer Space Telescope has reported what may be the first intact planet found closely ...

Our Milky Way galaxy's most common type of star is called a red dwarf - much smaller and less luminous than our sun. These stars - or so it was thought - simply are not big enough to host planets much ...

A Neptune-mass exoplanet, LHS 3154 b, orbiting a low-mass M dwarf star (11% solar mass) has been discovered, challenging previous assumptions about planet formation around such stars. The planet's ...

An exoplanet orbiting close to its host star triggers violent flares that are destroying its atmosphere, according to new research from the European Space Agency's Cheops mission. Credit: Janine ...

White dwarf stars, like this one shown shrouded by a planetary nebula, are much smaller than stars like our Sun. NASA/R. Ciardullo (PSU)/H. Bond (STScI) The Sun will someday die. This will happen when ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This article was originally published at The Conversation. The publication contributed the ...