HD 20794 d completes its orbit just shy of two Earth years, placing it well within reach of conditions that might harbor life ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Around a star just 20 light-years from the Solar System, astronomers have confirmed the existence of what might be a habitable world. The exoplanet HD 20794 d is just under six times the mass of Earth ...

Scientists believe the exoplanet HD 20794 d, six times the mass of Earth, could harbour liquid water on its surface.

Is Earth really exceptional?  A new book seems to reaffirm that notion.  But given the right conditions, primitive life may be a mere byproduct of biophysics.

(The last time all seven planets aligned was on April 8, 2024, during the total solar eclipse). Aug. 29, 2025: Six planets – ...

A newly confirmed exoplanet around a nearby sunlike star might be astronomers’ best chance yet to look for life beyond the ...

Astronomers have discovered an exoplanet that might have favorable conditions for liquid water. This planet, HD 20794 d, belongs to the group known as super-Earths. It is located in a star system less ...

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may not be the full picture.