For example, Mercury, being closest to the sun, takes just 88 Earth days to complete one orbit. On the other hand, Neptune, ...

As Earth approaches warmer levels experienced earlier in its geologic history, it may be bad news for human survival.

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A spectacular celestial event is set to captivate the night sky this week as all seven planets in our solar system align in a ...

NASA says Earth is in the clear from asteroid 2024 YR4, which had a small chance of impacting our planet in 2032.

Astronomers have concluded that the Earth is safe from an asteroid that threatened to cause havoc by striking the Earth in ...

Would dropping every nuke or climate change make our home a barren, sterile world? Probably not, but we're trying ...

Bigger than Planet Earth? The Americas just might be. That is the verdict from the creative team behind NBC’s Tom ...

Earth may now be home to the most glorious beaches in the solar system , but 3 billion years ago, it may have been Mars that ...

Mars may once have hosted a warm, ocean-bearing environment, according to new data collected by a rover that explored an area ...

An alignment of seven planets will appear, whether by the naked eye or with the use of a telescope, this month in the U.S. Here's how to spot it.

The odds that the space rock, 2024 YR4, will smash into our planet in 2032 have dropped to nearly zero, leading astronomers to conclude that we are no longer in danger.