我們已往在火星的生命

我們已往在火星的生命
發佈日期:2014年12月16日 , 訂閱

Conclusion: Mankind lived on Mars about 3.5 billion years ago.
During our life on Mars, we developed sophisticated civilizations. About three billion years ago, all life on Mars went extinct suddenly. Later, Mars and our dead bodies were frozen. This video presents evidence for fossils and man-made pavements on Mars. The images were taken by NASA’s rovers on Mars and NASA’s satellite that orbits around Mars. The images are described in details in this article: http://wretchfossil.blogspot.tw/2014/…
Detailed evidences for Martian concrete pavements are listed in: http://wretchfossil.blogspot.tw/2014/…
The following article proves the “rocks” are not rocks: http://wretchfossil.blogspot.tw/2015/…
My Website: http://wretchfossil.blogspot.tw/
My Videos and Photos:
Videos on YouTube https://www.youtube.com/user/LinLiang…
Videos in Xuite http://vlog.xuite.net/lin440315940
Photos in Flickr https://www.flickr.com/photos/fossil_…
Photos in Xuite http://photo.xuite.net/lin440315940
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Wow! Astronaut Captures Incredible View of ‘Fireball’ Meteor from Space (Video)

Wow! Astronaut Captures Incredible View of ‘Fireball’ Meteor from Space (Video)

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While filming an incredible view of Earth from space, an astronaut aboard the International Space Station (ISS) inadvertently captured a fireball on camera as it whizzed into the atmosphere off the coast of South Africa, above the Atlantic Ocean.

European Space Agency (ESA) astronaut Paolo Nespoli shot the video on Nov. 5 as the ISS flew from a spot over the southern Atlantic Ocean toward Kazakhstan, orbiting about 250 miles (400 kilometers) above Earth. To spot the meteor in the image, look toward the top-right corner of the video.

With three meteor showers raining down on Earth this month, it’s tough to say exactly which meteor shower this fireball belongs to. It may have come from the Taurid meteor shower, which peaked a few days later, on Nov. 10. It could also be an early Leonid — that meteor shower peaks this weekend, but it has been active all month long. And the Orionid meteor shower peaked in late October, but it will remain active through the end of November. [5 Amazing Fireballs Caught on Video]

A screenshot from Paolo Nespoli's video of a meteoroid shows a fireball zipping through the atmosphere on Nov. 5, 2017. A red circle indicates the location of the fireball.

A screenshot from Paolo Nespoli’s video of a meteoroid shows a fireball zipping through the atmosphere on Nov. 5, 2017. A red circle indicates the location of the fireball.

Credit: ESA/NASA/Space.com

Meteors are pieces of space rock — usually debris from comets or asteroids — that enter Earth’s atmosphere at high speeds. Friction with the atmosphere produces heat that vaporizes the meteors, causing them to light up in the sky like “shooting stars.” Sometimes, the meteors can splatter when they hit the atmosphere, causing a bright flash of light known as a fireball.

“Indeed it looks like a bright meteor, or fireball,” Detlef Koschny, co-manager of the near-Earth object (NEO) segment of ESA’s Space Situational Awareness program, said in a statement. “One can see the fireball illuminating the clouds from above, so it must have been close to them — and close to the Earth’s limb. It also seems to show a little tail.”

Though it certainly looks like a fireball, Koschny said there are other possibilities, such as a re-entering piece of orbiting space debris.

Rüdiger Jehn, another co-manager of ESA’s NEO program, calculated that the object seemed to be moving “much faster than typical,” entering the atmosphere at 40 kilometers per second, or about 89,500 mph. According to Jehn, that’s twice as fast as a typical meteor, “but still in the observable range between 11 and 72 km/s” (approximately 24,600 to 161,000 mph).

Also visible in Nespoli’s time-lapse video are plenty of clouds and thunderstorms, with blue flashes of lightning scattered across the view. A faint, yellow-orange airglow can be seen above the horizon. This faint emission of light comes from sodium atoms in the so-called sodium layer of the atmosphere, which is located 50 to 65 miles (80 to 105 kilometers) above Earth’s surface.

Email Hanneke Weitering at hweitering@space.com or follow her @hannekescience. Follow us @SpacedotcomFacebook and Google+. Original article on Space.com.

日本衛星發現月球巨洞 有望成太空基地

日本衛星發現月球巨洞 有望成太空基地
2017-10-19 20:41中央社 東京19日綜合外電報導

日本科學家發現月球地下有巨大洞窟。 路透
日本科學家發現月球地下有巨大洞窟。 路透

日本官員19日表示,日本宇宙航空研究開發機構(JAXA)的科學家發現月球地下的巨大洞窟,有朝一日可能打造成月球基地,讓太空人避免受劇烈溫差及危險輻射影響。法新社報導,日本探月人造衛星輝夜姬號(Selene)已確認長約50公里、寬100公尺的巨洞存在,據信是35億年前火山活動的熔岩流動場所,表面冷卻凝固後,內部流失形成空洞。

美國科學期刊「地球物理研究通訊」(Geophysical Research Letters)本週刊出這項重大發現。

日本宇宙航空研究開發機構(Japan AerospaceExploration Agency, JAXA)研究員春山純一(Junichi Haruyama)今天對法新社表示,「我們先前已經知道據信是熔岩管的這些地點,但我們到現在才確認它們的存在。」

春山純一指出,這個地下通道位於名為「馬利厄斯丘陵」(Marius Hills)的下方,可讓太空人不受月球表面劇烈溫差及有害輻射影響。

春山純一說:「我們還沒真正地探查過洞穴內部,所以相當期待探測活動能帶來更多發現。」

在此之前,日本於6月透露,擬於2030年左右將太空人送上月球。

中國及印度正積極發展它們的太空計畫,美國國家航空暨太空總署(NASA)及其他全球太空機構也致力於2030年代將太空人送上火星

太空人火星