How Old is The Universe?
Astronomers have determined that our universe is 13.7 billion years old. How exactly did they come to this precise conclusion? …
Astronomy
How Fast is The Speed Of Light?
Light travels at a constant, finite speed of 186,000 miles per second or approximately 671 million miles per hour! If …
How Far Is Pluto From Earth?
Pluto is, on average, 39.5 AU or 5.9 billion km / 3.7 billion mi away from the Sun. Earth is, …
How far away is jupiter from earth?
The answer to the question “How far is Jupiter from Earth” can have a different answer every day of the …
How Big is the Universe?
While the spatial size of the entire universe is unknown, it is possible to measure the size of the observable …
How Big Is the Sun?
Our Sun is 864,000 miles in diameter and 10,000 degrees Fahrenheit on the surface. Our Sun is a bright, hot ball of …
How Many Earths Can Fit Inside the Sun?
The Sun is the largest object in our solar system. The Sun’s volume would need 1.3 million Earths to fill …
How Big is the Moon?
Earth’s moon is the brightest object in our night sky. But how big is the moon? The moon’s mean radius …
What is Cosmic Microwave Background Radiation?
The Cosmic Microwave Background radiation, or CMB for short, is a faint glow of light that fills the universe, falling …
What Are Fraunhofer Lines?
Photosphere, visible surface of the Sun from which most of the sunlight that reaches Earth directly is emitted. Because the …
