Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

The Sun is 93 million miles away, so sunlight takes ... The giant planet Jupiter, whose large moons Galileo discovered with his "trouble-making" telescope, is more than 5 times farther from ...

Alignments of five or more planets are rare—there will be two more featuring five or more planets this year, but after that the next won’t happen until 2040.

WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these ...

Venus, Mars, Jupiter and Saturn will all be ... However, the latter two gas giants are so far away from Earth that you would need a telescope to see it. If you are determined to look for them ...