The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

NASA's flagship space telescope captured flares from the disk of superheated material around the black hole, revealing the ...

The moons around planets in the Solar System are natural satellites ... circular orbit it must be travelling at the right speed. The diagram shows a satellite orbiting the Earth.

These alignments aren't the neat planetary queues you see in diagrams and illustrations of the Solar System. That's not a thing that actually happens in the real Universe, sadly. Yet the planets ...

Space photos remind us that, around every corner of our vast universe, something spectacular ... humanity's first landing on a moon in the outer solar system when it touched down on Titan.

Artist's illustration of a dyson sphere. Credit: Universe Today. The idea of Dyson Sphere’s has ... The idea suggests that a ...