Hydrogen is the most abundant element in the entire Universe. It fuses into helium, powering the stars, but it is also used as a fuel here...
Stars are probably the most important objects in the Universe. They’re certainly the cosmic objects we’re most familiar with – just look up, whether it’s day...
About 71 percent of the Earth’s surface is covered in water, but the life sustaining element is not very common elsewhere in the Solar system. While astronomers...