NASA plans to crash a spacecraft traveling at a speed of 15,000 miles per hour into an asteroid next year in a test of "planetary defense".

Water is essential for life on Earth and other planets, and scientists have found ample evidence of water in Mars’ early history.

On isolated mountaintops across the planet, it is time to look at the supermassive black hole at the heart of our Milky Way galaxy.

Astronomers have reported the discovery of a structure thought to be a "protocluster" of galaxies 11 billion light-years from Earth.

Researchers have developed a concept that would make rocket fuel on Mars, that could be used to launch future astronauts back to Earth.

Researchers from Chile directly measure the amount of both water and carbon monoxide in the atmosphere of a planet in another solar system.

One of the youngest planets ever found around a distant infant star has been discovered by an international team of scientists.

A planet transiting a star outside of the Milky Way galaxy may have been detected for the first time by the Chandra X-ray Observatory.

Water is essential for life on Earth and other planets, and scientists have found ample evidence of water in Mars’ early history.

Skywatchers around the world turned their attention toward asteroid 2012 DA14, a cosmic rock about 150 feet (50 meters) in diameter.

The planet Venus can be seen as the Earth's evil twin. At first sight, it is of comparable mass and size as our home planet.

Astronomers have discovered the very first confirmed planetary system that resembles the expected fate of our solar system.

While black holes and toddlers don't seem to have much in common, they are remarkably similar in one aspect: Both are messy eaters.

When Nicole Oliveira was just learning to walk, she would throw up her arms to reach for the stars in the sky.

The approximately $4 million spacecraft, a smaller-than-usual type of satellite known as a "CubeSat," is as large as a "box of Cheerios".

Earth, Venus and the other planets residing in the inner solar systems were likely born from repeated hit-and-run collisions.

So far, we know of only two interstellar objects (ISO) to visit our solar system. They are 'Oumuamua and 2I/Borisov. There should be more.

For astronomers, the ability to observe the Cosmic Dawn represents an opportunity to answer the most enduring cosmic mysteries.

NASA is developing tools to increase astronaut autonomy to operate spacecraft or systems without assistance from the Mission Control Center

Water is essential for life on Earth and other planets, and scientists have found ample evidence of water in Mars’ early history.