Back in the 1600s, astronomer Galileo Galilei peered into his telescope and discovered dark spots on the sun, subsequently noticing that they seemed …
How Close Can We Get to the Sun?
Besides the obvious concern, extreme heat, what else is stopping space exploration from getting closer to the sun? And could we actually touch the sun some day? Plus more curious questions about space, answered.
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It's something we kind of take for granted. Roses are red, and planets are spherical. That's just the way things are, right? After all, building …
Four million miles (or if you prefer, 6.44 million kilometers) is quite a distance. It's the equivalent of driving around Earth's widest point, the …
If you ever looked at the night sky in the Northern Hemisphere, you've noticed that gleaming object that the rest of the heavens appears to move …
On Earth, plate tectonics build up mountains, set off tsunamis and form volcanoes. To paraphrase the late evolutionary biologist Theodosius …