The theory of the Big Bang states that the universe started in an extremely dense and hot state, and that it has been expanding andRead More
Category: Universe
A few centuries ago, everyone believed that the Earth was the centre of the universe and that everything orbited around us. This vision of theRead More
Some hundreds of years ago it was thought that the Earth was the centre of the universe, that our planet was stationary, and that allRead More
The Earth, also known as the blue planet, is the third planet that orbits the Sun. The latter is one of the billions of starsRead More
The Earth belongs to the solar system. The star of this system is the Sun, and the latter is orbited by 8 planets (Mercury, Venus,Read More
The discovery of a similar planet to the Earth would generate a great impact and interest, especially if this planet could be habitable. But, whereRead More
Black holes are some of the most intriguing bodies of the cosmos, because they are places in space where gravity is so intense that notRead More
Black holes are some of the most interesting and mysterious objects in the cosmos. These bodies are a place in space with such intense gravityRead More
The cosmic microwave background (CMB) is the remnant, in the form of electromagnetic radiation (light), from the Big Bang. This light permeates the universe inRead More
Beyond the Earth, space is a hostile place for human beings. Near the stars, the temperature is very elevated, but this rapidly changes as weRead More