The Moon – Overview

The Moon is the only natural satellite of the Earth. Scientists believe the Moon was created 4.5 billion years ago when a large object hit the Earth and blasted out rocks that came together to orbit around the Earth.  They eventually melted together, cooled down and became the Moon. The Moon has a diameter of […]

Saturn – Overview

Named after the Roman god of agriculture, Saturn is the second largest planet and the sixth in distance from the Sun. It’s also the furthest planet visible with the naked eye and has been known since prehistoric times. Galileo was the first person to observe Saturn through a telescope in 1610. He reported seeing odd appendages on either side of […]

The Plaque on Pioneer 10

When signals from Pioneer 10 can no longer be heard here on Earth, it will start another, perhaps more important mission as it continues its journey into interstellar space. Pioneer 10 will become the cosmic equivalent to a message in a bottle cast into the sea. Pioneer 10 is a space probe that completed the first mission to the […]

10 Amazing Facts About the Sun You Need to Know

1. The Sun is just one of about 200-400 billion stars in our Galaxy The Milky Way is estimated to contain 200–400 billion stars, although this number may be as high as one trillion. Although, counting the stars in the galaxy is inherently difficult because, well, we can’t see all of them. Astronomers look at a small sample of the Milky Way and […]

Jupiter’s Great Red Spot is enormous storm system

Jupiter’s most iconic feature is its Great Red Spot. An enormous storm system, the Spot is approximately 12,400 miles long and 7,500 miles wide —large enough to engulf the Earth and Mars side by side. Unlike hurricanes and cyclones on Earth, which come and go in a matter of days, this iconic oval has endured for centuries. The spot was first recorded […]

The Apollo astronauts’ footprints will stay on the moon for 100 million years

Because there is no atmosphere on the moon, and hence no erosion, the Apollo astronauts’ footprints, roverprints and spaceship prints will stay preserved on the moon for at least the next 10 to 100 million years. They won’t stay on there forever, though. The Moon is exposed to bombardment by meteorites that could easily wipe out […]

Ceres – Overview

Named after the Roman goddess of corn and harvests, Ceres has a diameter of 950 km (590 mi) and is the largest object in the asteroid belt. Composed of rock and ice, Ceres is the only dwarf planet in the inner Solar System. Gravitational perturbations from Jupiter billions of years ago prevented Ceres from becoming a full-fledged planet. […]