... operators. There are even documented reports from Space Shuttle astronauts on UFO sightings. On 18 February 2002, while conducting repairs on the Hubble Telescope, one of the astronauts exclaimed that he had seen a bright flash of light off in the distance. So unusual was the incident that the astronaut thought that he was is seeing things, but his partner then confirms the sighting ... from the F-16s indicate that the object descended from 3,000 meters to 1200 meters in 2 seconds. That's a speed of 1800 km/hour. The tapes also show the object accelerating from 280 km/hour to 1800 km/ho...

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• Has Bibliography
• Grade Level: High School

... one to point a telescope up to the sky for observation. Refracting telescope: Refraction refers to the bending of light when it passes from one medium to another of different density. These telescope use a large lens called an objective lens. The main purpose of the lens is to collect light as possible. The lens has a convex (curved outward) shape making it thicker in the middle than ... 's orbit at which it is closet to the sun. As the planet moves from perihelion to the orbital point called aphelion, its speed decreases. Aphelion is the orbital point of a planet in which it is the fart...

• Word Count: 3183
• Approx Pages: 13
• Grade Level: High School

... consider is, if there had ever been a time when nothing existed then nothing would exist now. It is evident that nothing produces nothing. In light of this, since something exists now, it must follow logically that something has existed forever. As Sproul has remarked: "Indeed, reason demands that if something ... While its outer limits have not been measured, it is estimated to be as much as 20 billion light years in diameter (i.e., the distance it would take light to travel across the Universe at a speed of over 186,000 miles per second). There are an estimated one billion galaxies in t...

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• Grade Level: High School

... since travel at huge speeds will no longer be energy prohibited. Now, would those ships be prohibited by the speed of light? Some physicists believe that it is possible to make space-time itself. This means to surround the spaceship with local space time in ... deep space travel times. This implies discovering a means to move a vehicle at or near the actual maximum speed limit for motion through space or through the modification of space-time itself. 3. Discover fundamentally new on-board energy production methods to power propulsion devices. This third goal ... To understand and fully ap...

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• Has Bibliography

... since travel at huge speeds will no longer be energy prohibited. Now, would those ships be prohibited by the speed of light? Some physicists believe that it is possible to make space-time itself. This means to surround the spaceship with local space time in ... deep space travel times. This implies discovering a means to move a vehicle at or near the actual maximum speed limit for motion through space or through the modification of space-time itself. 3. Discover fundamentally new on-board energy production methods to power propulsion devices. This third goal ... To understand and fully ap...

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... Strong winds with speeds higher than 100 mph are also found in the tropic region of Mars. In the summer wind speeds are typically weak, ranging from 0-22 mph. During the fall and winter the wind speed increases to above 60 mph ("Weather, Climate, and Life on Mars: Frequently Asked Questions ... as low as -183*C (-300*F) ("The Planets"). There is no liquid on Mercury, though a radar observer of the North Pole of Mercury has indicated evidence of water ice in the shadows of some of the craters (Goddard Space Flight Center). Venus Venus is the second planet from the Sun and is considered to...

• Word Count: 4020
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• Has Bibliography
• Grade Level: High School

... the only planet that is larger. The gas giant is 72 thousand miles in diameter, almost ten times the size of Earth. In spite of its huge size, though, Saturn weighs very little. It is a very light gas planet. Saturn is the least dense planet in the solar system-- so light, in fact, that it would float in water. This planet is mostly composed ... of hydrogen and helium, like Jupiter, but it is much less dense. The combination of its light weight and fast rotation causes Saturn to spread out, or ... solar wind on the sunward side,as was found in the case of Jupiter. The atmosphere of Sat...

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• Grade Level: High School

... to make one revolution around the sun. Its day is much shorter than an Earth day since its period of rotation is around approximately ten and a half Earth hours, which is thirteen and a half hours less than Earth's day. Due to Saturn's light weight and fast rotation it causes it to spread out, or oblate, its center, when viewed through a small ... are just the top layer of a very deep layer that covers the center of liquid hydrogen. The different color gases produce belts of streak-like swirls surrounding the planet. The swirls are a series of storms on the planet's surface. The atmosph...

• Word Count: 3775
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• Has Bibliography
• Grade Level: High School