The concept of “day” is so obvious to us, people, that we often get surprised when we realize that the length of the day on other planets can be quite different than here on Earth. Perhaps even more shocking thing … Read More
British and American scientists have proved that billions of years ago the Earth resembled the modern Titan, a satellite of Saturn with an atmosphere and vast seas, high mountains, rivers, dunes, mists. Everything is like Earth’s, but with one difference: … Read More
Imagine that you can get the energy from every star in a radius of 100 million light-years. Of thousands of galaxies, each of which has billions of stars. Try to imagine that you are capable of taking this kind of … Read More
Why does time seem to move forward? It’s a riddle that’s puzzled physicists for well over a century, and they’ve come up with numerous theories to explain time’s arrow. The latest, though, suggests that while time moves forward in our … Read More
Our home galaxy is not the thin, clean spiral we had envisioned. Researchers created the first 3D map of the Milky Way galaxy and figured out what makes it warped and twisted. So, we now know that the Milky Way … Read More
Why is there something instead of nothing? In other words: Why does the universe exist (and why are we in it)? Philosopher and writer Jim Holt follows this question to three possible answers in this engaging TED lecture. Or four. … Read More