What is the diameter of the Earth's moon?Earth's Moon:The moon is Earth's only natural satellite, and in fact was formed from part of the planet that was excavated by a large Mars-sized object several billion years ago. This collision liquified much of the Earth's rock and even ...
Jan Hendrik Oort calculated that the centre is in the direction of the constellation of Sagittarius. The centre of the Galaxy is commonly referred to as Sagittarius A*. It is estimated at a distance of 26,000 Light Years from Earth. The Galaxy's centre is estimated at 25,000 light-years...
Dividing the circumference by the diameter of any and all circles will yield the same result: pi — and that's true for all circles, regardless of size. Pi is a constant or "universal" number, which is a value that does not change no matter its circumstances. That means π is always ...
Elon Musk has made a lot of predictions about Mars, including that we could have thebeginnings of a human colony this decade. Musk envisions a fleet of more than 100 Starships, gathering in orbit of Earth to depart en masse for Mars every 26 months when the planet is closest. Each of ...
A supermoon is defined as a full moon that coincides (or very nearly so) with lunar perigee — when the moon arrives at that point in its orbit closest to the Earth. Up until around 2011, this was usually referred to as aperigean full moon.The term supermoon was first coined by an...
Atotal solar eclipseoccurs when the moon passes between the sun and Earth, completely obscuring the face of the sun. These solar eclipses are possible because the diameter of the sun is about 400 times that of the moon, but also approximately 400 times farther away, says theNatural History ...
Which is the best telescope to view galaxies? Because most galaxies appear small and dim from our vantage point on Earth, telescopes with larger apertures are recommended because they collect more light. Newtonian reflectors are a great choice for those on a budget and can pull in some tremendo...
The simple harmonic oscillator r2 dependence is same as drilling a hole through the center of the Earth and dropping a bowling ball down through it. Note the counter intuitive result that the general relativistic zero point fluctuation exotic vacuum potential must be positive, i.e. dark energy ...
silt, and sand. Clay measures less than 0.002 mm (0.0008 inch) in diameter, silt is between...
at the cave's only known natural opening, which the Lakota consider sacred as the place their ancestors first emerged from the Earth. The park is open year-round and offers plenty of hiking trails, wildlife, and camping opportunities for anyone that doesn't want to venture beneath the Earth...