Why does the universe exist?
The Big Bang theory is the prevailing cosmological description of the development of the universe. According to estimation of this theory, space and time emerged together 13.799±0.021 billion years ago, and the universe has been expanding ever since.
How many planets are there in the universe?
10,000,000,000,000,000,000,000,000 planets
How big is the known universe?
46.508 billion light years
How many planets are in our galaxy?
The Milky Way contains at least one planet per star, resulting in 100–400 billion planets, according to a January 2013 study of the five-planet star system Kepler-32 with the Kepler space observatory.
Can we see planets in other galaxies?
Since our own galaxy alone is now estimated to contain billions of planets, maybe even more planets than stars, it is reasonable to conclude that other galaxies do as well. This discovery is tantalizing, but it is not actually the first possible detection of a planet in another galaxy.
How many planets are in our solar system 2020?
There are eight planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
How are planets named?
The lowercase letter “b” stands for the planet, in the order in which the planet was found. The first planet found is always named b, with ensuing planets named c, d, e, f and so on.
Which planet is nearest to the earth?
Mercury
How far is the moon from Earth?
384,400 km
What is the farthest planet from Earth in the universe?
Astronomers have discovered one of the most distant planets known, a gas giant about 13,000 light-years from Earth, called OGLE-2014-BLG-0124L. The planet was discovered using a technique called microlensing, and the help of NASA’s Spitzer Space Telescope and the Optical Gravitational Lensing Experiment, or OGLE.
How big is the sun?
696,340 km
How old is the moon?
4.53 billion years
Does the sun have gravity?
274 m/s²
How old is the planet?
4.543 billion years
Is Earth Old or new?
The age of Earth is estimated to be 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). This age may represent the age of the Earth’s accretion, or core formation, or of the material from which the Earth formed.
How long is a billion years?
109 years
What is 1000000000 years called?
One billion years
What is the difference between billion and trillion?
In the short scale, billion means a thousand millions (1,000,000,000 which is 109), trillion means one thousand billions (1012), and so on. Thus, an n-illion equals 103n+3.