For decades, scientists have been trying to work out just how the Earth got all its water, and the prevailing theory was that comets and asteroids brought it, and we have evidence for that mechanic; however, a new hypothesis has provided evidence that the water was already here, locked away in hydrous minerals in a very iron-poor core.
Have you ever wondered how old the Earth is? How early scientists tried to get an answer for this puzzling problem, and how modern science has finally given us an answer?
Have you ever wondered how old the Earth is? How early scientists tried to get an answer for this puzzling problem? And how modern science has finally given us an answer by looking at meteorites? More at #365DaysOfAstro
Could we nudge the orbit of the Earth to avoid the death of the Sun? Could it get kicked out of the solar system altogether? What are rogue exoplanets?
Today on #365DaysOfAstro, lets explore on how fast you’re spinning in space right now, and how you’d actually gain a little weight if the Earth stopped spinning. How Fast Does the Earth Rotate?
Why Does the Earth Spin? We’ll tell you straight away without having to hang around until the end of the video. That’s our USP!
Every time we send a spacecraft to another world, our Earth-based lifeforms are going with us. No matter how well we try to keep them clean, a few stowaways will always come along for the ride.
We’ve now discovered thousands of exoplanets, we’re learning more and more about the kinds of planetary systems there are out there across the Universe. But are planets like Earth unique or totally rare?
Today at #365DaysOfAstro, @cheapastro questions some questions. Do we have the ability to measure the exact amount of heat arriving at the Earth from the Sun? & If we want a lunar orbiting space station, couldn’t we just send the ISS there?
Fraser gives 5 answers to the question, “why should we explore space when we have so many problems here on Earth?”