These clouds completely cover up our view of the planet. The dense atmosphere produces a greenhouse effect that raises the temperatures to nearly 400 degrees, which is 740K. Venus’ surface is actually hotter than Mercury’s, desp... ... middle of paper ... ...spacecraft, which was Voyager 2, on August 25, 1989. The majority of what we know about Neptune comes from this one encounter. Neptune’s composition is similar to Uranus, being made up of various rock and ices, and having 15% hydrogen with little helium.
Jupiter Research Jupiter is the fifth and largest planet in our solar system. This gas giant has a thick atmosphere, 17 moons, and a dark, barely-visible ring. Its most prominent features are bands across its latitudes and a great red spot, (which is a storm). Jupiter is composed mostly of gas. This enormous planet radiates twice as much heat as it absorbs from the sun.
The four outer planets are called gas giants because they are mostly comprised of gas and vapor. These planets are Jupiter, Saturn, Uranus, and Neptune. All planets mostly have a circular orbit that lie in the ecliptic plane. The solar system contains much smaller objects that orbit the Sun as well. The asteroid belt contains of rock and metal.
Most gas giants have many moons and are surrounded by a set of rings or a thin disk of small particles of ice and rock. Like all gas giants, Jupiter has a thick atmosphere made up of mostly hydrogen and helium. Jupiter is much larger than Earth. You can fit about 1,300 Earths into Jupiter. The great red spot is a storm larger than Earth, which is pretty incredible.
However there are larger clouds known as giant molecular clouds which have a mass ranging from 1,000 to 1 million solar masses. They range in diameters from 20 to 200 parsecs (1pc ~ 3.26ly), making them “the largest gravitationally bound objects in the Galaxy, and the largest known objects in the Universe made of molecular material”, according to Astrophysicist Paul Ruffle of Manchester University. It is believed all stars are born within these regions of the interstellar medium and observations have shown that they are located primarily within the disk of spiral galaxies and the active regions of the irregular galaxies. Since molecular clouds are cold, dark and dusty, we cannot observe them directly in visible light. However larger wavelengths such as infrared and submillimeter (wavelengths within the range of 0.3-1mm) techniques can pass through the clouds unaffected which can make observations of a star forming.
Mars has various aspects of its own; some scientists discovered that this planet has water upon its surface. This discovery was encountered by the NASA’s spacecraft Odyssey. The hottest planet is Venus, though Mercury is the closest to the Sun. Venus atmosphere traps the heat from the Sun, like a greenhouse effect and absorbs it. The temperature on Venus is 465 C. Jupiter is the biggest planet and it also rotates the fastest It two and a half times massive than all the other planets and made up of gases that’s why it’s known as the “gas giant”.
Saturn is the 6th planet in order distance from the sun. It cannot approach the planet Earth closer than 1,190,000,000 kilometers. Its brightness is due to its large size. Saturn's equatorial diameter is 120,660 kilometers, but its globe is kind of flattened, and the polar diameter is only 108,000 kilometers. The mass of Saturn is 95.17 times that of the Earth, and the escape velocity, which is the velocity which once attained it will enable the object to "coast" away from the planet, is 32.26 kilometers per second, more than three times that of the Earth.
Stars owe their existence to the force of gravity. Stars are created from the thinly spread atoms of dust and gas that swirl throughout space. The atoms clump together into dense clouds that eventually collapse under their own gravity. Other forces counteract the gravity. The dust and cloud grows steadily hotter until a nuclear furnace ignites creating a bright shining star.
Venus’ rotation is somewhat unusual in that it is both very slow ( 243 Earth days per Venus day) and retrograde. In addition, the periods of Venus’ rotation and of its orbit are synchronized such that it always presents the same face toward Earth when the two planets are at their closest approach. The pressure of the planet’s atmosphere at the surface is 90 atmospheres and is composed mostly of carbon dioxide. There are several layers of clouds which are many kilometers thick and composed of sulfuric acid. This dense atmosphere produces a run-away greenhouse effect that raises Venus’ surface temperature by about 400 degrees to over 740 K. The planet of Venus is often regarded as Earth’s sister planet, in some ways they are very similar.
Earth’s day is twenty-four hours but “Jupiter’s day is nine hours and fifty-five minutes.” (Lawrence O. Richards, 20) Second Jupiter is also the biggest planet in the solar system. It is so immense that it “can hold thousands of Earth size balls in it” (Lawrence O. Richards, 20) and some people call it “the king of the planets”. (Lawrence O. Richards 20) Third Jupiter is also the name of the king of the Roman gods; the Ancient Romans named Jupiter after their chief god because it was the biggest star in the sky. But “despite Jupiter’s great size its gravity only is 2.63 times that of Earth’s gravity.” (Lawrence O. Richards, 20) Fourth if it were not for Jupiter’s gravity the whole planet would float away in space as a giant gas cloud that could cover most of our solar system. “Jupiter is like a giant protective mother of Earth.” (Jeannie K. Fulbright 104) Jupiter is called th... ... middle of paper ... ...gravity of Jupiter and the small size of Earth to the gigantic size of Jupiter.