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Astro empires distance calculator5/5/2023 ![]() It is an orange-star about 37 light-years from Earth. The brightest star of the constellation Boötes. ![]() The study of astronomical practices and sky lore of ancient civilizations and cultures. Aquila, the EagleĪ constellation best seen in the south in late summer. Aquarius, the Water BearerĪ constellation of the zodiac. From 1969 to 1972, it put six two-man crews on the lunar surface. The NASA space program that landed the first humans on the Moon. Apogee and PerigeeĪpogee is the point of greatest separation between Earth and the Moon or an orbiting satellite, while perigee is the point of closest approach. Objects move slowest in their orbits when they are aphelion and fastest when at perihelion. Perihelion is the closest distance from the Sun. Aphelion and PerihelionĪphelion is the greatest distance between a planet or other body and the Sun. It is a binary system, consisting of an orange supergiant star that is many times more massive than the Sun, and a smaller companion that is hidden in the primary star’s glare. The brightest star of the zodiacal constellation Scorpius. Few terrestrial rocks are found atop the ice fields deep in Antarctica, so there's a good probability that any rocks on the ice fell from space. Scientists from the United States and other countries conduct weeks-long searches for meteorites on the ice. They follow circular wind currents that circle the continent, allowing the payload to drop back on the Antarctic ice at the end of a mission. They climb to about 130,000 feet, and can remain aloft for weeks or months. The balloon missions, launched in southern summer, take advantage of the 24-hour daylight to power solar cells and maintain a steady altitude without the need to drop ballast. They operate telescopes at the south pole, launch instruments on balloons, and hunt for meteorites on the Antarctic ice. Antarctic AstronomyĪstronomers and planetary scientists conduct extensive research in Antarctica. It is a spiral galaxy that appears to be slightly larger but less massive than the Milky Way. The closest large galaxy to our own, at a distance of about 2.5 million light-years. Its name means “the flying eagle.” Andromeda Galaxy, M31 It forms one point of the Summer Triangle. It is a main-sequence star, shining pure white, and is about 17 light-years from Earth. The brightest star of the summer constellation Aquila, the eagle. It is closer to Earth than the other two stars, but it is so faint that it is not visible to the unaided eye. The third, known as Proxima Centauri, is about one-tenth of a light-year from the other two, and is a red dwarf star. Two of the stars - one of which is similar to the Sun, while the other is a little smaller and cooler - form a tight pairing. The closest star system to the Sun, at a distance of more than four light-years, Alpha Centauri consists of three stars. It is a red giant star, and is about 67 light-years away. The brightest star of the constellation Taurus.
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