circles that are arranged concentrically around the sun and lie on the same plane. (If you viewed them edge-on, you would see only a line.) However, none of the eight planets, including Earth ...

Nasa wants to send humans to Mars as early as the 2030s: a journey that would take around nine whole months. The red planet ... away from Earth, and is the fourth closest to the Sun.

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

NASA was formed in 1958 "to provide for research into problems of flight within and outside the Earth's atmosphere, and for ...

Mother Earth, Gaia, the third rock from the Sun - whatever you call it, this 4.5 billion-year-old planet is the one that we and all known living creatures call home.

Mars's atmosphere and climate are impacted by interactions with solar wind, a stream of plasma comprised of protons and ...

Because we live on Earth, the most we could see is a maximum of seven planets total. However, they are not always in the same direction or sector, but rather scattered all around the solar system at ...

Ambitious plans for lunar bases and Martian habitats present unique challenges, especially in coordinating time across ...

There will be six planets visible this time around ... other than Earth. It will be difficult to see them all since Saturn, Mercury and Neptune will be quite close to the sun right at sunset ...

The location of alignment is called the ‘ecliptic,’ representing the plane of the solar system in which the planets orbit around the ... opposite side of Earth from the sun.

On Monday night you may have a chance to witness the moon obscuring the Red Planet at its brightest, as well as a comet’s closest approach to the sun ... in orbit around the Earth grows ...