Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

Mars, Jupiter and Saturn are frequently seen in the night sky. But because Venus and Mercury orbit closer to the sun than Earth, with smaller, faster orbits, it's more rare for them to make an ...

From an astrological point of view, there are hardly two words that elicit a stronger reaction than Mercury retrograde.

Mercury retrograde starts Saturday, March 15 and goes through April 7. Here's what to know about how the first Mercury ...

As the name suggests, retrograde refers to when a planet appears to go backward in its orbit as viewed from Earth.

Astronomers have identified a quartet of small rocky planets orbiting Barnard's star - one of our closest stellar neighbors - ...

As the fastest-moving planet in our solar system, Mercury goes retrograde three to four times a year for about three weeks.

Mercury will enter retrograde three times, affecting communication, technology, and travel. This period, spanning various ...

Mars, Jupiter and Saturn are frequently seen in the night sky. But because Venus and Mercury orbit closer to the sun than Earth, with smaller, faster orbits, it's more rare for them to make an ...

Mars, Jupiter and Saturn are frequently seen in the night sky. But because Venus and Mercury orbit closer to the sun than Earth, with smaller, faster orbits, it's more rare for them to make an ...