But how big is the moon? The moon's mean radius is 1,079.6 miles (1,737.5 kilometers) and the mean diameter is 2,159.2 miles (3,475 km). Compared to Earth, the moon is less than a third the width of our home planet, according to NASA. The moon's equatorial circumference is 6...
Moreover, these distributions can be connected with those established for the packing of spheres, corresponding to the loosest packing state. The findings provide a new angle to understand the packing structure of stars in the universe.doi:10.1016/j.powtec.2020.12.022C.C. Wang...
Earth's widest point isthe equator, which runs across the planet's center at zero degrees latitude. This is because Earth is not a perfect sphere; it has a prominence across its center called the equatorial bulge.According to NASA, Earth's radius at the equator is 3,963 miles (6,378 k...
Do you know how big a supermassive black hole is? It's so big… that the fastest moving thing in our universe, light traveling at 670 million mph, would take weeks to cross its shadow. That is the case for the black hole known as TON 618 – a very distant black hole thatNASAcalled...
For example, astronomers look to quasars to study reionization, a period less than a billion years after the Big Bang when electrically neutral hydrogen atoms became charged and the first generation of stars lit up the universe. “The epoch of reionization is considered the end of ...
How Big is the Moon? [/caption] The Moon is one of the most significant objects in the night sky, second only in brightness to the Sun. So, how big is the Moon? The diameter of the Moon is only 3,474 km across. Just for comparison, the diameter of the Earth at the equator is...
This illustration shows some of the largest stars in the Universe, along with the orbits of Saturn (brown ellipse) and Neptune (blue ellipse) for comparison. The stars, from left to right, are the largest blue hypergiant, yellow hypergiant, orange hypergiant, and then the largest two stars ...
Axions may have been produced abundantly during the big bang. Photinos: Similar to photons, each with a mass 10 to 100 times greater than a proton. Photinos are uncharged and, true to the WIMP moniker, interact weakly with matter. Scientists around the world continue to hunt aggressively ...
The Apollo suit, by comparison, was much different. Including the life support backpack, the Apollo suit weighed about 180 pounds (82 kilograms). Most space stations missions last two to three weeks, but longer-duration missions may run as long as half a year. Usually, one astronaut on the...
How big is your lacto-bovine footprint, then? How many cows does it take to supply your dairy desires? Much less than one, actually. Cows are extremely productive, with 6-7 gallons of milk per day on modern farms. Even after accounting for things like cheese being a 10x concentration of...