A beautiful video, once again, from Michael Stevens, titled “How Earth Moves”. Michael explains many concepts, including “sub-solar point”, “sidereal day vs solar day”, or “how Earth moves in space” etc, and he is doing it in a very simplified manner. Enjoy!
A recent study led by Peter Behroozi of the Space Telescope Science Institute (STScI) in Baltimore, Maryland suggests that the vast majority of Earth-like planets in the universe have yet to be born. Using computer simulations to model planet formation around stars in the Milky Way galaxy, Behroozi and his team found that only 8% of potentially habitable planets have already formed. This means that the remaining 92% are yet to be born. The study’s findings have significant implications for our understanding of the prevalence of life in the universe and the prospects for finding it beyond our solar system.
“Your life on Earth” is a nice interactive webpage presented by the BBC – The British Broadcasting Corporation: how you and the world have changed since you were born? You’re simply entering your birth date, gender
It’s a well-known fact that a feather will fall slower than a bowling ball due to air resistance. However, what happens if you remove the air and drop both objects in a vacuum? Surprisingly, they will fall at the exact same speed. This might seem counterintuitive, but it’s actually a result of a fundamental principle of physics known as the equivalence principle. In this article, we’ll explore why bowling balls and feathers (in general, heavy objects and light objects) fall at the same speed in a vacuum and the implications of this principle on our understanding of gravity.