Venus currently rises in the east at 3:35 a.m. local daylight time. The eerie, low glimmering of Venus is a harbinger of daybreak, which begins exactly at that same time. In a telescope, Venus's ...

Two new studies used gravity data to pull back the curtain on the deep interiors of the Moon and one of the solar system’s largest asteroids.

Ironically, the exercise last May was interrupted by a real scenario, when Earth was hit by the strongest solar storm in two decades ...

It's easy to take Earth's constant rotation for granted. Every 24 hours, our planet completes a full spin on its axis, giving ...

One Pluto year equals 248 Earth years. At 1473 miles in diameter—about half the width of the United States—Pluto is the ...

After two decades of debate, research confirms that an odd binary star system has an equally odd planetary companion ...

Scientific American spoke with the astronomer who has contributed to the discovery of two thirds of Saturn’s known moons ...