Tag Archives: earth

Space edition: Earth without the Moon and the Mars Space Exploration Vehicle

Without the Moon we would have a short day, since the planet would spin faster. A day would be only 6 hours long. Also, without the Moon the tilt of Earth would vary so much that seasons would be wildly inconsistent from year to year. So, the Moon is very important. Also, in this space […]

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Water was here all along

Really, water didn’t come from asteroids or meteorites. The water was here at the formation of the solar system. After the Earth cooled down the water could clump together into oceans and then allow life to form. In fact, we have three oceans worth of water lying right now at 700 miles below Earths crusts […]

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Asteroid to hit Earth? This is how it would look like

Asteroid just a few miles big can leave a big scar on Earth and kill entire species, but if that asteroid would be a dwarf planet like Pluto? How would the impact be? Well, everything would die in a big ball of flame. In that situation maybe nothing could ever survive. Or would it survive? […]

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Why the upper Earth’s atmosphere is green

If you look closely at the night sky you will see that, at the horizon line, you will see a faint green glow. This is called airglow and happens allover the world. The lower parts of it are green, but in the upper atmosphere the color is actually red. What causes this airglow? The excited […]

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Why doesn’t the sun steal the Moon?

Because it is in Earth’s gravitational well or in Earths Hill sphere which goes up to 1.5 million kilometers out in space. From this sphere you can only get away if you break the escape velocity. For earth the escape velocity is about 5 km/s, but where the Mon is it is about 1.2 km/s. […]

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ISS time-lapse over Earth. Friday fun!

It’s been some time since I published a blog post with a time lapse video. Once again the ISS given us an amazing view over Earth and the full HD images bring us closer to it, at about 370 km altitude. The astronauts living in there fly with about 70 km/s and circle the Earth […]

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Watch Earth ever changing magnetic field courtesy of ESA

ESA is the NASA of Europe. It launches satellites and astronauts into space and has a ton of space drones ie satellites sent up there to do measurements, usually for civilian and science usage. The video from above shows the magnetic field as it changes and also a path of the magnetic North how it […]

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Water inside Earth’s mantle? Un-freakin-believable

Several science websites, among them New Scientists and University of Alberta, have reported that there is water in the mantle, 700 kilometers beneath our feet. Steven Jacobsen of Northwestern University in Evanston, Illinois, says that the water is trapped inside a blue rock called ringwoodite. And that is liquid water, if you ask. Wow, that […]

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Lightning on Earth created by the Sun

Who would ever think that the Sun generates lightnings on Earth? Well, given the fact that we get a lot of energy from the Sun, this should not come as a surprise. DNews reports that cosmic rays and solar wind cause lightnings on Earth. An interesting result from this study: The results could prove useful […]

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Dust is incredibly important! Trust me!

Joe Hanson explains us why dust is an integral part of the Universe and our lives. In the dust of our beds we could find even 10 million dust mites, tiny-tiny (0.3 milimeter) creatures lurking out there like it’s their land. And it is as there are 100–500 animals/g dust. Ooops. In space a 100 […]

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