Eight planets, hundreds of moons, hundreds of thousands of asteroids, and billions of comets orbiting our Sun make up our ...

Learn more about whether First Solar, Inc. or Intel Corporation is a better investment based on AAII's A+ Investor grades, which compare both companies' key financial metrics.

Orbital dynamics show that President Trump’s pledge to land astronauts on Mars couldn’t happen until 2029 at the earliest.

When astronomers detected the first long-predicted gravitational waves in 2015, it opened a whole new window into the Universe.

After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.

Scientists now think that a mysterious object massive enough to have gravitational interactions with the Solar System’s disk ...

"What If is an epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a ...

The James Webb Space Telescope has revolutionized astronomy in just three years. A new project celebrates its impact on the ...

While Charon is currently listed as a satellite or moon by the International Astronomical Union (IAU), consideration is being given to it perhaps being classified as a dwarf planet in its own right, ...

Emily Simpson, a passionate space enthusiast and recent Florida Tech graduate, has published groundbreaking research that imagines an alternate version of our solar system. Instead of the asteroid ...

"Chemical rockets that we use today, even with the extra speed boost from flying by planets, or from swinging by the sun for ...