Since the publication of troll sagas in the Middle Ages, these mythical creatures have continued to captivate popular imagination, particularly in Scandinavian countries. Medieval Norwegian law even recognized the existence of trolls,...

Modern trolls, lurking on social media, harass and antagonize others while concealing their identities are much like their ancient counterparts who hid in dark, isolated spaces. Rooted in Scandinavian folklore, trolls originally...

NASA's Lunar Reconnaissance Orbiter shows the Moon has some pretty unusual features!

The battle between the US and the USSR for space supremacy.

Verona Rupes, found on Uranus' moon Miranda, is 20km tall! But because Miranda is so small, and its gravity so weak, would you survive falling off it? Astrum answers!

Countries like China, the US, and Russia are setting their sights on the Moon. But is it purely for the advancement of mankind, or is there profit to be found? Mining for Helium-3, metals and rare-earths on the Moon might be closer than...

What's happening in 2020 with space agencies across the world?

How big do you think our solar system is? Up until Pluto? A bit beyond? How big can other solar systems get? Astrum answers!

Almost everything you could want to know about the closest planet to the Sun, Mercury. Real HD photos and videos taken by the MESSENGER probe. We discuss the orbit, climate, geographical features, and general physical characteristics or...

The Mystery of the Gruithuisen Domes on the Moon.

In 2017, Cassini ended its mission by disintegrating in Saturn's atmosphere. What were the final images it ever took?

Saturn's moon, Titan, is the only other body in the solar system that can support liquid on its surface. But not liquid water, liquid methane. What did NASA's Cassini discover about the methane lakes of Saturn's moon, Titan?

You may have heard of the official longest golf drive by Mike Austin, but did you know there was likely a drive 3 times Mike's record?

This video teaches about common nonfiction text features including title, table of contents, headings, captions, labels, photographs, glossary, and index. These videos are educational videos and lessons for kids. They teach and help kids...

Solar and lunar eclipses are celestial phenomena that occur when the sun, moon and Earth align in a way that either the moon casts a shadow on Earth or the latter casts a shadow on the moon. So what are the similarities and differences...

Without a spacesuit, there is no chance of surviving in the scary cosmic void. In science fiction movies, we often see peoples heads exploding or being frozen by the apparent pressure differential or lack of heat, respectively. As long...

The Apollo 13 crew was the farthest distance that humans have traveled from Earth. On April 14, 1970, the crew was 400,171 kilometers (248,655 miles) from Earth. The Apollo 13 mission was the third manned mission intended to land on the...

The legendary Greek philosopher Socrates first popularized the idea that the Earth was round instead of flat. He observed a lunar eclipse and realized that the shadow on the moon due to the Earth was curved, which prompted him to deduce...

Yes, it is theoretically possible to use telescopes to see if the moon landings were real, but practically no. It would take an incredibly powerful telescope to see signs of moon landings on the lunar surface, and even the best...

Mercury and Venus have no moons because of their close proximity to the Sun. Any moon orbiting around them is likely be swallowed by the mammoth gravitational pull of the mighty Sun. All planets except for Mercury and Venus have moons....

The Moon's proximity to Earth and geological similarity make it an enticing target for colonization. At just three days away, communication delays would be mere seconds. Its surface may also contain frozen water and oxygen extracted from...

The reason airplane flights take longer when traveling west is because of the different speeds of rotation on Earth. The rotational velocity of Earth decreases as one goes from the Equator to the poles. This means that a place on the...

Although stars are visible in space, pictures of celestial bodies taken from satellites by astronauts do not show any stars in the background. This is because the stars are very far away and, therefore, appear incredibly dim in contrast...

While flying over a metropolitan or densely populated area at night, its likely that you wont see stars from the airplane window. This is because the excessive artificial lighting (i.e., light pollution) of the city can light up the sky...