Light from the Sun travels 93 million miles, at a speed of 186,000 miles per second, to get to Earth in about 8 minutes and 20 seconds. People on Earth see the Sun as it was 8 minutes and 20 seconds ago.
People also see stars and galaxies as they were when the light reaching the Earth was first emitted. The galaxy MACS0647-JD is 13.3 billion light-years away, so the light from it just reaching Earth now was first emitted when the universe was only 400 million years old. The Sun only formed 4.5 billion years ago, so the light from that galaxy is over twice the age of the Sun.Learn More
To find the volume of a shape, apply and solve the right volume formula that correlates with the specific shape in question. Some different shapes might be a cube, cylinder, pyramid or cone.Full Answer >
A cubic foot of water weighs 62.4 pounds and a cubic foot of ice weighs 57.2 pounds. This makes ice lighter than water.Full Answer >
10 grams is equivalent to 0.35 ounces in weight or approximately 2 teaspoons in measure. 28.4 grams is the equivalent of 1 ounce, and 453.6 grams equals 1 pound; 15 grams equates to 1 tablespoon, and 1 cup holds approximately 237 grams.Full Answer >
KSI is an abbreviation for kilopounds per square inch, or 1,000 pounds per square inch. It is a measure of the tensile strength of steel.Full Answer >