It is the second largest moon in the Solar System, the largest is Jupiters moon Ganymede, and it is larger by volume than Mercury. Titan was the first known moon of Saturn. It was discovered in 1655 by the Dutch astronomer Christiaan Huygens. Titan is mostly composed of ice and rocky material. Because Titan has such a dense atmosphere scientists had a lot of trouble studying the surface of the large moon.
It is 485 million miles from the sun making it a very cold planet in the range of minus 240 degrees F. However, due to the enormous pressure of its mass, the center is estimated to be 54,000 degrees F., or five times hotter than the surface of the sun. (The interior of the sun is 40 million ºF.) The earth rotates on its axis in 24 hours establishing day and night. Jupiter rotates in 9 hours, 54 minutes, giving it the shortest day and night of any of the planets. The surface speed of the earth at its equator is a little over 1,000 mph.
The planet, named Kepler-22b, is 2.4 times wider than Earth. But the true nature of the new planet remains a mystery. No one knows whether it's rocky, gaseous or liquid. If it has a surface, astronomers estimate temperatures in the comfy 70-degree range -- T shirt
Venus also has the slowest rotation out of all the planets rotating around the sun every 243 Earth days. 5 .Why do Mercury and Earth’s Moon lacks an atmosphere? Mercury and the moon are so small and light they do not have enough gravity to hold on to an atmosphere. Also they are closer to the Sun so the sun burns off their gasses a lot quicker than ours. 8.
But when the new demotion of Pluto was announced in 2006, it started a whole new controversy: should Pluto be a planet once again or stay a dwarf planet. (Overbye, 2006). Considering its distance from the sun, orbit, and it's size it clearly does not fit the definition of a planet that scientists have created. Because of this, Pluto has remained with the classification of dwarf planet.
Halley’s Comet was last seen on the 9th February 1986. There was much disappointment to this appearance as unlike in previous sightings it was barely visible to the naked eye. It was the least favorable sighting as the earth as the comet was on opposite sides of the sun during the time of the sighting. In addition increased light pollution from urbanization caused many people to never see the comet at all. The length of Halley’s comets orbit is approximately 76 years, though it has varied from 74-79 years since 240BC.
The Universe that is observed through the most powerful telescope we have today may be only a small portion of the real physical Universe. 3. If the current Big Bang theory is correct, the Universe is 15 billion years old. We can assume that the size of the Universe is about 15 biliion light years. The Universe is not permanent 1.
400,000 people were involved in making the Apollo 11 moon landing happen. The Apollo Moon landings were among the most completely documented and observed events in history. The conspiracy "theories" that claim otherwise are a bunch of nonsense without even a single compelling piece of evidence. Most of the questions raised are based on ignorance of basic physics and optics. Video special effects were in their infancy in the late 60's so that faking a landing on the Moon would probably have been more difficult than actually going there, and it seems highly unlikely that the hundreds or even thousands of people who would have had to be involved in such a conspiracy would have kept it a secret for so long.
The sun is 93 million miles away from Earth, but its gravity is strong enough to hold the Earth in its orbit. The gravity of the solar system keeps everything in the system, including comets and asteroids, orbiting the center of the system, the sun. Copyright © 2013 edHelper Name _____________________________ | | | Date ___________________ | Gravity 1. | What is gravity? The basic force of the universe The force of attraction between all objects in the universe A force we experience all the time All of the above | | 2.
While such methods have been performed on the planet after its discovery, they have not yet detected what the orbital eccentricity of the planet actually is, and have as of March 2012 only set an upper limit on the mass of the planet. Physical characteristics .Kepler-22b's radius is roughly 2.4 times the radius of Earth. Its mass and surface composition remain unknown, with only some very rough estimates established: it has less than 124 Earth masses at the 3-sigma confidence limit, and less than 36 Earth masses at 1-sigma confidence. The Habitable Exoplanets Catalog gives a mass estimate of 6.36 Earth masses (and a radius of just 2.10 Earth radii) for the planet as of October 2012, after initially estimating it at ~10-35 Earth masses. Kepler-22b might be an "ocean-like" world.