If was visible to the naked eye, "it would appear two to three times the size of the sun or moon to viewers on Earth," NASA explained. Credit: NASA Goddard Space Flight Center "The relative ...

Earth, between sweltering Venus and frozen Mars, formed and orbits within a band where water could persist in solid, liquid, and gaseous phases. Mars had surface water, but not as much as Earth, and ...

Tiny grains from a distant asteroid are revealing clues to the magnetic forces that shaped the far reaches of the solar ...

Picture in your mind a big parking lot with 131 million cars on it. Now imagine that they are spread out over the entire Earth’s inhabited areas. Although still a large number, it is ...

per second relative to the sun when it entered Earth's atmosphere. This is greater than the solar system's escape velocity, which varies with distance from the sun but at Earth's orbit is 26.2 ...

The imprecision in the measurements of claimed interstellar fireballs means it is highly likely they originate in the solar ...

In the time Pluto was found, classified as a planet and reclassified as a dwarf planet, it has not completed one orbit. One ...

The probe will orbit the sun "close enough to pass inside a solar eruption, like a surfer diving under a crashing ocean wave, ...

THE question of the origin of the solar system is one that has been a source ... A particle falling from an infinite distance to the earth under the earth's attraction alone would develop a ...

A century ago this month, a brash astronomer leaked a discovery that opened our view to the cosmic distance scale and the ...

Planets, moons, and the quest for life beyond earth As we explore the vast expanse of space, we embark on a journey that ...

A new study posits that our planet's gravity will cause seismic activity on Apophis when it makes its close approach in 2029.