On Earth, you can look up at night and see the Moon shining bright from hundreds of thousands of miles away. But if you went to Venus, that wouldn’t be the case. Not every planet has a moon – so why ...

Is a sun a star or a planet? Current definitions define a star as a body that generates its own energy. While humans have relied on the sun for hundreds of thousands of years, it's only in the last ...

Here's everything you need to know about this week's parade of seven planets. Getty Images A seven-luminaries-deep parade of planets will line up and light up the night sky this week, folks. Just ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The recent and much-ballyhooed "planetary parade" was an interesting celestial event that likely ...

Why are we asking for donations? Why are we asking for donations? This site is free thanks to our community of supporters. Voluntary donations from readers like you keep our news accessible for ...

The phenomenon of a Full Moon arises when our planet, Earth, is precisely sandwiched between the Sun and the Moon. This alignment ensures the entire side of the Moon that faces us gleams under ...

Apollo samples provide evidence: Researchers analyzed Moon rocks brought back by the Apollo missions and, for the first time, used their iron isotope ratios to trace where Theia originally formed.