Great question! The key insight here is that the Universe is only finitely old It's worth asking how we know this In 1929, Edwin Hubble made the first measurement of the...

While there weren't humans around 1 billion years ago to measure, we can get at this question through simulations! The surface temperature wasn't very different - maybe a few...

That's a really interesting question! It's important to note that hurricanes aren't spiral-esque because they are heat engines Hurricanes are heat moving engines in the sense...

That's a good question! In fact, this is one of the questions that cosmologists seek to answer  The current consensus is that the Universe will indeed keep expanding, where...

Great question! We have developed detectors for gravitational waves, which are vibrations in the fabric of space-time predicted by Einstein's theory of relativity There are two...

Hello!  For me, the thing that inspired me the most was the beauty of the universe if you take the time to look  I was first introduced to astronomy from the semi-dirty and...

Hi! The value of 98 m/s^2 for the acceleration arising from Earth's gravity actually arises from substituting constants into Newton's Law of Universal Gravitation, F =...