A brown dwarf is a celestial or an astronomical object having a size between a small star and a giant planet, like Jupiter. In other words, brown dwarfs are too large to be classified as planets and too small to be called a star.
The Mars One mission has instantly exploded in popularity, with support from legendary astronaut Buzz Aldrin and more than 78,000 international applicants vying for the opportunity to permanently settle on the red planet by 2023.
Ever since I was a kid I have loved astronomy. I would lie in the back yard and stare at the stars in awe, trying to imagine what was out there. This led to a love of science fiction and science in general. Ultimately, I pursued other avenues for my career (music), but my love of the heavens still remains. This list looks at 10 commonly believed factlets about astronomy which are wrong. This is derived (in small part) by the excellent book Sorry, Wrong Answer – I strongly recommend it.
I typically do lists on unexplained mysteries which have little scientific proof of existence, such as hauntings. While these tales are a fun read and may even send a shiver or two up your spine, to me the greatest unexplained mysteries of all are about things that we actually know to exist – and which defy everything we know to be possible.
Space is awesome. There’s no arguing that. But all of the really cool stuff is way out there—beyond the edges our solar system—in deep space. In fact, our solar system is pretty lousy. Everyone learns about it in first grade: You’ve got nine planets (or eight since Pluto got the boot), a few boring moons flying around them, the Sun, and that’s pretty much it—right? Actually, space has more wonders than you could possibly imagine, and some of them are right in our backyard
Blue supergiant stars are unique, in the sense that they are amongst the most luminous stars, and yet short-lived. These stars can transform into red supergiant stars before eventually exploding during the supernova event.
Stars are massive shining spheres of hot gas, the closest of which is our Sun. Stars are primarily made of hydrogen, smaller amounts of helium, and trace amounts of other elements. Even the most abundant of the other elements present in stars are only present in very small quantities.
Since I was a child I liked the stories about other worlds, other planets. I always imagine another “Earth” full of extraterrestrial life …. When I grew up, I started to follow, particularly, all news about the discovery of new exoplanets.