From outer space, cosmic rays flow throughout our solar system, which are highly energetic particles. But no one is aware of their origin.
# Our solar system, with the sun, the planets, moons and the billions of asteroids and comets fill less than a trillionth of our universe.
# Whilst the Earth and the other planets within our solar system orbit around the Sun, the Sun itself is orbiting around the center of our galaxy, the Milky Way. It takes the Sun 225 million years to perform a complete circuit of the galaxy. The last time the Sun was in its current position in the galaxy the super-continent Pangaea was just about starting to break apart and early dinosaurs were making an appearance.
# The edge of our solar system is not Pluto, it is theorized Oort cloud.
# 20 million miles, this is the average distance between stars.
# Olympus Mons on Mars is the tallest mountain on any of the planets of the Solar System. The mountain is a gigantic shield volcano (similar to volcanoes found in the Haiiwain Islands) standing at 26 kilometers tall and sprawling 600 kilometers across. To put this into a scale, this makes the mountain almost three times the height of Mount Everest.
# The core of a neutron star is very dense. It is so dense that if you take a spoonful of matter from its core, it would weigh 200 billion pounds!!
# 2.7 kelvin is the temperature of the cosmic microwave background radiation, that permeates the entire universe.
# Sagittarius B is a vast molecular cloud of gas and dust floating near the center of the Milky Way, 26,000 light-years from Earth, 463,000,000,000 kilometers in diameter and, amazingly, it contains 10-billion-billion-billion liters of alcohol. The vinyl alcohol in the cloud is far from the most flavorsome tipple in the universe, but it is an important organic molecule which offers some clues how the first building blocks of life-forming substances are produced.
# R136a1 is the most luminous and massive star, which is 8.7 million times brighter than the sun, it is present in the Large Magellanic Cloud.
# 13.2 billion years is an age of the oldest known star, it is the red giant HE 1523-0901.
# According to the estimates of scientists, there are around 20 trillion galaxies in our universe.
# 150 billion light years is the diameter of Universe, approximately.
# There is no center for Universe, as every galaxy is expanding away from one another.
# Do you know that the stars you see in the sky may be dead? As they are billions of light years away from us and it will take billions of years for the light to reach earth, which means that the stars light which you see now is billion-year-old lighting. So they may be dead now.
# The most complex object in the universe is the human brain, with a billion neurons and a quadrillion connections.
# The universe began with the Big Bang, which happened around 13.7 billion years ago.