单词：asteroidical
单词：asteroidical 相关文章
This is Scientific American's 60-Second Science. I'm Karen Hopkin. Thisll just take a minute. Any school kid can tell you that comets are made of ice. That frozen water burning off is what gives comets their characteristic tails. But asteroids were g
Scientific American(四)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. If we want to learn more about our planet and other planets in the universe, we can get some help from stars that are long dead and gone. Thats what U.
Scientific American(一)月
A-a-all on your body girl All on your body A-a-all on your body girl All on your body A-a-all on your body girl All on your body A-a-all on your body girl Girl you too fine 10 outta 10 I'll be your rude boy And your gentleman So just let me do it I'l
节奏布鲁斯
LOS ANGELES, April 8 (Xinhua) -- NASA's Wide-field Infrared Survey Explorer (WISE) has discovered a rare asteroid that traces out a horseshoe shape relative to Earth, the Jet Propulsion Laboratory (JPL) said on Friday. Unlike most near-Earth asteroid
英语新闻
Although Zimbabwe President Robert Mugabe's ZANU-PF party has agreed to talks with the opposition Movement for Democratic Change on a possible power sharing arrangement, the country's political violence and intimidation continue. Peta Thornycroft re
VOA标准英语2008年（七月）
NASA: Humans Could Visit Asteroid in 2021 These chunks of ancient space rocks hold clues about the formation of the universe, pose threats to our planet, and present new territory for explorers. NASA's proposed asteroid mission is a logical next leap
VOA标准英语2013年(六月)
A: Can you tell me where it hurts? B: I am so glad they called you. It feels like something is really wrong with my stomach! A: Does it hurt when I push here? B: Its mostly on my right side. Right here! A: Have you been feeling this way for awhile? B
英语情景对话-健康
A-a-all on your body girl All on your body A-a-all on your body girl All on your body A-a-all on your body girl All on your body A-a-all on your body girl Girl you too fine 10 outta 10 I'll be your rude boy And your gentleman So just let me do it I'l
节奏布鲁斯
ARI SHAPIRO, HOST: A giant asteroid slammed into Earth about 65 million years ago. That impact killed off the dinosaurs. And now scientists say it had another major effect on the planet, one that's a cautionary tale. Here's NPR's Nell Greenfieldboyce
2018年NPR美国国家公共电台5月
NASA Launches Mission To Retrieve Ancient Asteroid Dust play pause stop mute unmute max volume 00:0003:12repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin.
2016年NPR美国国家公共电台9月
NASA's Other Asteroid Mission: Grab A Chunk And Put It In Orbit Around The Moon play pause stop mute unmute max volume 00:0004:02repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or up
2016年NPR美国国家公共电台9月
LOS ANGELES, June 24 (Xinhua) -- Near-Earth asteroid 2011 MD will whip past Earth on June 27, but will not pose any threat, NASA's Jet Propulsion Laboratory (JPL) said on Friday. The asteroid will pass only 12,000 kilometers (7,500 miles) above the E
英语新闻
By Paul Sisco Washington, DC 07 July 2006 watch Asteroid report A major asteroid passed by the Earth this week, and another is heading this way. An asteroid visible in the night sky Asteroids are similar to comets and meteors. But they are larger, m
2006年VOA标准英语（七月）
By Mike O'Sullivan Los Angeles 03 July 2006 A large asteroid, known as 2004 XP14, raced past the Earth early Monday. Scientists say it posed no threat to the planet, but serves as a reminder of the hazards encountered in space. -------- The rocky sp
2006年VOA标准英语（七月）
BEIJING, Nov. 7 (Xinhuanet) -- A huge asteroid will pass closer to Earth than the moon on Tuesday, but experts say there is no cause for alarm. Asteroid 2005 YU 55 will pass about 300-thousand kilometers from the earth. The giant space rock is about
英语新闻
Continued political bickering in the United States is hurting stock and commodity prices and slowing spending by some U.S. holiday shoppers. Oil was selling at below $89 a barrel Monday, as traders worried that an economic downturn could cut demand f
英语新闻
BEIJING, June 28 (Xinhuanet) -- A truck-sized asteroid passed over the Atlantic Ocean within 7,500 miles of the Earth on Monday, according to NASA's Jet Propulsion Laboratory. The space rock, called asteroid 2011 MD, is the second space rock to zip e
英语新闻
NASA has announced that an Asteroid will pass closer to Earth than the TV satellites that surround the planet. NASA says that the celestial visitor has no chance of impacting the Earth and is known as 2012 DA14. A group of amatuer astronomers discove
英闻天下
Meanwhile, a 45-meter wide asteroid has hurtled safely past earth after it came within 27-thousand kilometers, making it the closest known flyby for a rock of its size. The asteroid, named 2012 DA14 came closer to earth than many communication and we
英闻天下