Staring at the sun—a close (but safe) look at our home star Staring at the sun ... Free learning activities and videos about the solar system Free learning activities and videos about the ...

Every object in our Solar System is held in place by the Sun’s ... It takes about 230 million years for for it, and us, to complete one full orbit. And the Milk Way is just one galaxy in the ...

Discover how a giant interstellar cloud known as the solar nebula gave birth to our solar system and everything in it. The solar system as we know it began life as a vast, swirling cloud of gas and ...

The discovery doubles the known number of these mysterious celestial objects across our solar system that resemble asteroids but zip through space like comets, albeit without the “tail” comets ...

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars. When you purchase through links on our site, we may earn an affiliate commission.

This January, stargazers are in for a treat as four of our solar system’s planets—Venus, Saturn, Jupiter, and Mars— will ...

including how to better track the dynamic environment of our solar system and better understand the star at its heart. The report called for NASA to pursue a mission that would launch a ...

The 2025 skywatching guide includes a rare sunrise solar eclipse, an occultation of Mars and three supermoons. Here are the ...

Long after the planets of the Solar System formed, catastrophic collisions continued, with a climax about 4 billion years ago during an interval called the Late Heavy Bombardment. The scars of ...

Our solar system resides in a unique low-density bubble called the Local Hot Bubble (LHB). Stretching at least 1,000 ...