asteroid造句
91. Astronomers have long thought that the asteroid belt is being ground down through collisions, but such a smashup has never before been seen.
92. Terrestrial planets could reside inside the innermost asteroid belt as well, though there currently is no clear indication of that, Marengo said.
93. Paleontologist Dave Raup postulates that 75 percent of all extinction events were caused by asteroid impacts.
94. At first, astronomers thought it might be a so-called "main belt comet"--a rare case of a comet orbiting in the asteroid belt.
95. A nearby star, visible with the unaided eye, is ringed with two rocky asteroid belts and an outer icy halo, making it a three-ring cosmic circus.
96. Hubble has trained its new camera on the atmospheric disturbance on Jupiter believed to have been caused by a comet or asteroid impact.
97. The Geminides originate from mysterious 3200 Phaethon , which is an asteroid.
98. The asteroid is too dim to be seen with the naked eye and its gravity is too weak to affect tides or earthquake activity, said experts at the National Aeronautics and Space Administration.
99. In the past 10 years, the Alley has endured the triple asteroid strikes of an exploding Internet Bubble, the 9/11 terror attacks and the financial crisis. Thousands of firms went belly-up.
100. Epsilon Eridani is surrounded by not one but two asteroid belts, a possible sign that other, more Earth-like planets could be nearby on the inside of that belt, as Earth is in our solar system.
101. To speed up or slow down the asteroid, the space tug must keep the direction of thrust parallel to the body's orbital motion.
102. The two bodies are the most massive objects in the asteroid belt.
103. The inner asteroid belt be a virtual twin to the belt in our solar system.
104. Part of such planetesimals entered the asteroid region, drew out most of the matter there, and increased the random velocity of the asteroids that remained, so they could not combine to form a planet.
105. Astronomers have long thought that the asteroid belt is being ground down through collisions, but such a smashup has never been seen before.
106. Earlier studies have shown that the Earth does the same thing with dust released from the asteroid belt.
107. "You're moving the largest mother lode imaginable " said former astronaut Rusty Schweickart cofounder of the B612 Foundation an organization dedicated to protecting Earth from asteroid strikes.
108. The asteroid vaporized on impact, launching a cubic mile of rock into the sky.
109. Ananke, Carme, Pasiphae and Sinope may be remnants of a single asteroid that was captured by Jupiter and broken up.
110. An asteroid or comet fragment around 60 meters across is believed to have been behind the Tunguska Event, a powerful explosion that took place over Russia in 1908.
111. But he wanted to locate the impact site of the asteroid.
112. Like a frozen asteroid belt, it’s littered with chunks of ice and frozen methane and ammonia.
113. Between the orbits of Mars and Jupiter lies the asteroid belt.
114. The cosmic pile-up is the first ever witnessed in the asteroid belt, 90 million miles away in space.
115. The Pleiades won, and Maldek was shattered by spacecraft thus becoming your asteroid belt.
116. It is also the former number of Route 491, a brand of cough syrup, and forms part of the name of 666 Desdemona[http:///asteroid.html], a minor planet in the asteroid belt.
117. So Pluto should be a planet, as should Eris and the dwarf planet Ceres (the largest body in the asteroid belt between Mars and Jupiter), as well as many other objects.
118. And those numbers conspire to give asteroid fatalities a worryingly high annual average between collisions.
119. The researchers made a similar discovery in April this year when they discovered the first evidence of ice on an asteroid called 24 Themis.
120. The debris possibly came from a comet or asteroid that hit Jupiter.
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