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Pioneer 10 and Pioneer 11 were launched in 1972 and 1973. They were the first spacecraft to visit Jupiter and Saturn in a one-way voyage.
Voyager 1 and Voyager 2 probes followed after the Pioneers.
The Wilkinson Microwave Anisotropy Probe (WMAP) was launched in 2001 and measured the temperature of the radiation left over from the Big Bang.
NASA/ESA spacecraft was launched in 1997 and reached Saturn in 2004. Since then its been orbiting around the planet and taking photos of the planets' rings, moons, and weather.
The Huygens and Cassini probes separated. Huygens made a trip to the moon Titan and landed on solid ground in 2005. Cassini is the first to orbit Saturn and study the system in detail.
The earth's atmosphere blocks out most X-rays and prevents astronomers from viewing the universe in X-ray light - a high-energy, short-wavelength light.
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Asteroids are what's left after the formation of our solar system from billions of years ago.
It is believed that the reason why they were formed were because of the birth of Jupiter. Its birth hindered any planetary bodies to form in the space between Mars and Jupiter, which resulted to the small objects that were present to crash onto each other and fragment themselves.
The two theories that back this up are the Nice model and the Grand Tack.
The different types of asteroids are:
The first movie of the blockbuster franchise, retroactively titled as Star Wars Episode IV: A New Hope, exploded into the movie theatres in 1977. It became a global cultural phenomenon and gave bir...
The Star Wars story is a classic Hero’s Journey, in which the protagonist, Luke Skywalker in a galaxy, far, far away, learns that he is able to harness a certain force. He eventually joins the rebellion against the Galactic Empire, and along with his allies, destroys the Death Star, uniting with his father, who had fallen on the dark side.
The original story and its continuation in the two sequels released in the 80s had limited computer graphics technology, which eventually became better in the 90s. The Director, George Lucas, then released three ‘prequels’ which had better technology and visual effects, though the story wasn’t in the same league.
The magnetic fields of the sun distort and twist as the Earth rotates on its axis. When these fields become knotted together, they create sunspots. Usually, these sunspots occur in pairs.
Auroras also occur on planets such as Jupiter, Saturn, Uranus, and Neptune. These gas giants have thick atmospheres and strong magnetic fields. These auroras are a little different from Earth's as they are formed under different conditions.
Venus has an aurora generated by its magnetotail. Mars experiences local auroras due to magnetic fields in the crust. There are also northern hemisphere auroras caused by particles hitting the Maritan atmosphere.
Northern lights occur roughly every eleven years. Record-keeping of the sun's activity began in 1749. Since then, there have been 22 full cycles.
Particles ejected from the sun travel 93 million miles toward Earth before they are drawn toward the magnetic north and south poles. As the particles move through the Earth's magnetic shield, they mix with the oxygen, nitrogen, and other elements that result in the display of lights.