Three states were at the top for most sightings.
It could create a new hope for male infertility.
Would you be up to the challenge?
She's turned away from fame to space.
The scientist predicted the exact year of an apocalypse.
Experts are hopeful it will lead to the lost tomb of Cleopatra.
This Antarctic megaburg is on the move.
It could transform the way we generate solar energy.
It looks like Elon Musk has some pretty ambitious plans for Mars.
NASA astronaut Leland Melvin had an unusual experience on one of his space missions.
The results could lead the way for new, less invasive cancer treatments.
Some scientists are concerned about the growing popularity of mixed-reality headsets.
Yes, that glacier really is as terrifying as it sounds.
This bionic eye is a true technological marvel.
Whilst it improves your quality of sleep, it impacts your overall health.
Could you live in a spinning house?
The French entertainer was known for consuming a diet of glass, metal and rubber.
The YouTube video compares it to the mindblowing speed of light.
The solar maximum is approaching.
It won't be finished until 3023.
If you lie away at night, struggling to nod off - you'll want to try the military sleep method.
If you saw the ISS, it would be gone in a flash.
It turns out even Mars isn't safe from all our trash.
Building incredible structures like the Golden Gate Bridge requires a whole lot of skill.
The billion-dollar project never really materialised.