Ideas from books, articles & podcasts.
Traveling to the stars is very difficult because they are so far away. The nearest star Proxima Centauri is 25,300,000,000,000 miles (about 39,900,000,000,000 kilometers) away. It would take the fastest rockets that we have thousands of years to reach it. It is always possible that sometime in th...
Why is it hard to find planets outside our solar system?
Tour of two massive black holes.
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