During holidays, festivals, anniversaries... people often release lots of balloons into the sky, making them look beautiful and fun.
The newly discovered helium mine in Minnesota has a record high helium concentration, reaching 13.8%, promising to help solve the shortage of this gas.
If you pump Helium gas into the balloon and release them, this ball will fly to a maximum height of under 10km.
Have you ever wondered why the ball can fly in the air? If you do not know, please refer to the article below.
Few people suspect that airbags exist
Every year passes, you are 1 year older, your parents are older than 1 year old, your lover is 1 year older and of course, the Earth is 1 year old.
Before the Sun was fully enlarged and turned into a giant red star swallowing the Earth, human descendants may have migrated to other planets like Neptune.
SpaceX CEO Elon Musk said his company found the reason why the Falcon 1 rocket exploded on September 1, causing Facebook's first satellite to be caught.
New astronomers have discovered an extremely rare binary star system in the universe. One of the binary systems has a big star that completely obscures the star.
No need to rely on rocket technology, passengers can still enjoy a unique green space-friendly environment thanks to the elegant helium-powered balloon produced by a Spanish