Earth's magnetic field protects from solar radiation. It originates from molten core motion. Magnetic north pole moves constantly. Field reversals occurred in the past. The field weakens in some areas ...

Avid stargazers in Malaysia often take trips within the country to spots where stars are more visible. Read more at ...

The possible aurora borealis coincides with the Perseids meteor shower, with hundreds of meteors likely visible in the night ...

Watch the pair of amazing time-lapses of the Aurora Borealis from the International Space Station captured by NASA astronaut ...

Before defining what a light-year is, we should define what a light-year is not: It is not a measure of time, but rather a ...