Mercury, Venus, and Mars sit within the same general neighborhood as Earth, yet each has followed a radically different path.

Mercury, Venus, Earth and Mars – may have formed from two rings around the young sun, rather than a single disc ...

The Solar System is a weird place filled with incredible physics and geological oddities that often break down in human terms ...

Turns out, it's as tough to drop inward into the inner solar system, as it is to head outward. The problem stems from losing momentum from a launch starting point on Earth. It can take missions ...

Planetary transits are a very common thing that astronomers often rely on to search for and study exoplanets. Transits can even let astronomers study the atmospheres of planets, something that we've ...

Spread the loveOn Thursday, March 19, 2026, a remarkable astronomical event will take place as Mercury, the closest planet to the Sun, reaches a stationary point at 4 p.m. EDT. This phenomenon occurs ...

On January 3, the Solar Orbiter spotted Mercury passing in front of the Sun. The transit of the small, dark orb puts the scale of our solar system into sharp relief. Mercury is about one-third the ...