Mars, Venus, Jupiter, Mercury and Saturn should be visible to the naked eye. You'll need a high-powered viewing device like a ...

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

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

Six planets are visible in the night sky right now. On Feb. 28, Mercury will add a seventh planet to the planetary parade. Venus, Mars and Jupiter are 'great naked-eye targets' for beginning ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...

A nearly new moon and mostly clear skies will present near ideal viewing conditions for the planet parade through Feb. 28.

Gaia-4b, a giant exoplanet orbiting a small star, is the first planet confirmed using Gaia’s astrometric technique.

The European Southern Observatory's Very Large Telescope (VLT) imaged both of the planets directly, and PDS 70b has the ...