Asteroids are small, rocky objects that orbit the Sun. Explanation: Although asteroids orbit the Sun in the same way as planets, they are much smaller. Small stony objects that orbit the sun are known as asteroids. The majority of them exist in the main asteroid belt, which lies between Mars and JupRead more
Large distances between celestial bodies are expressed in a unit known as light year. Explanation: The distance traveled by light in one Earth year is measured in light-years. A light-year is approximately 6 trillion miles long (9 trillion km). The distance traveled by light in a year is measured inRead more
Greenwich Time meantime is clock time rather than solar (astronomical) time. Explanation: The yearly average (or mean) of the time each day that the Sun crosses the Prime Meridian at the Royal Observatory Greenwich is known as Greenwich Mean Time.
The average distance between the Earth and the sun is 150 million km. Explanation: As noted earlier, Earth's average distance to the Sun is about 93 million miles (150 million kilometers) from the Sun
The average distance between the moon and the Earth is 384,000 km. Explanation: The Earth's average distance from the Moon is 384 000 kilometers (238 855 miles). The distances at apogee and perigee of the Moon's elliptical orbit.
41 percent area of the moon is never visible from the earth. Explanation: Due to libration, the invisible area of the Moon does not makeup exactly 50% of the Moon's surface. Because of Libration, approximately 59 percent of the Moon's surface is visible from Earth throughout time.
The mass of the moon is compared with 1/81 of the earth. Explanation: The moon weighs 7.35 x 1022 kg or about 1.2 percent of the mass of the Earth. In other words, the Earth is 81 times heavier than the moon. 3.34 grams per cubic centimeter (3.34 g/cm3) is the density of the moon.
Equinox means Vertical sun over the equator. Explanation: Equinox is derived from the Latin words aequi and nox, which mean "equal" and "night," respectively. The vernal equinox is the first day of spring when day and night are ultimately equal in length.
This circle can the days and nights be longer than 24 hours. Explanation: On Earth maps, the Arctic and Antarctic Circles are extremely important. At a latitude of 66.5 degrees north of the Equator, the Arctic Circle is located. This imaginary circle marks the southernmost latitude in the Northern HRead more
Sun is vertical over the tropic of cancer on June 21 or Summer Solstice. Explanation: Once a year, at these latitudes, the Sun is directly overhead at noon. The Summer Solstice, which occurs on the Tropic of Cancer in the Northern Hemisphere, is normally June 21.
What is Asteroid?
Ishu
Asteroids are small, rocky objects that orbit the Sun. Explanation: Although asteroids orbit the Sun in the same way as planets, they are much smaller. Small stony objects that orbit the sun are known as asteroids. The majority of them exist in the main asteroid belt, which lies between Mars and JupRead more
What is the unit of measurement of the distance between celestial bodies?
Ishu
Large distances between celestial bodies are expressed in a unit known as light year. Explanation: The distance traveled by light in one Earth year is measured in light-years. A light-year is approximately 6 trillion miles long (9 trillion km). The distance traveled by light in a year is measured inRead more
What is the mean of Greenwich Time?
Ishu
Greenwich Time meantime is clock time rather than solar (astronomical) time. Explanation: The yearly average (or mean) of the time each day that the Sun crosses the Prime Meridian at the Royal Observatory Greenwich is known as Greenwich Mean Time.
What is the average distance between the Earth and the sun?
Ishu
The average distance between the Earth and the sun is 150 million km. Explanation: As noted earlier, Earth's average distance to the Sun is about 93 million miles (150 million kilometers) from the Sun
What is the average distance between the moon and the Earth in km?
Ishu
The average distance between the moon and the Earth is 384,000 km. Explanation: The Earth's average distance from the Moon is 384 000 kilometers (238 855 miles). The distances at apogee and perigee of the Moon's elliptical orbit.
How much of the total surface area of the moon is never visible from the earth?
Ishu
41 percent area of the moon is never visible from the earth. Explanation: Due to libration, the invisible area of the Moon does not makeup exactly 50% of the Moon's surface. Because of Libration, approximately 59 percent of the Moon's surface is visible from Earth throughout time.
How much is the mass of the moon when compared with that of the earth?
Ishu
The mass of the moon is compared with 1/81 of the earth. Explanation: The moon weighs 7.35 x 1022 kg or about 1.2 percent of the mass of the Earth. In other words, the Earth is 81 times heavier than the moon. 3.34 grams per cubic centimeter (3.34 g/cm3) is the density of the moon.
What is the Equinox?
Ishu
Equinox means Vertical sun over the equator. Explanation: Equinox is derived from the Latin words aequi and nox, which mean "equal" and "night," respectively. The vernal equinox is the first day of spring when day and night are ultimately equal in length.
What is most important about the Arctic and the Antarctic circles?
Ishu
This circle can the days and nights be longer than 24 hours. Explanation: On Earth maps, the Arctic and Antarctic Circles are extremely important. At a latitude of 66.5 degrees north of the Equator, the Arctic Circle is located. This imaginary circle marks the southernmost latitude in the Northern HRead more
On which day sun rays fall vertically over the Tropic of Cancer?
Ishu
Sun is vertical over the tropic of cancer on June 21 or Summer Solstice. Explanation: Once a year, at these latitudes, the Sun is directly overhead at noon. The Summer Solstice, which occurs on the Tropic of Cancer in the Northern Hemisphere, is normally June 21.