日日爽I天天爽天天爽I日韩有码第一页I国产中文字幕在线观看I狠狠躁夜夜a产精品视频I在线免费av播放I麻豆免费视频I91成人免费

NASA to launch spacecraft to take straight-on peek at sun's poles

Source: Xinhua| 2020-01-28 05:39:27|Editor: yan
Video PlayerClose

WASHINGTON, Jan. 27 (Xinhua) -- U.S. space agency NASA announced Monday that NASA and the European Space Agency (ESA) will launch a new spacecraft to snap the first pictures of the sun's north and south poles.

The spacecraft Solar Orbiter is scheduled to be launched from Cape Canaveral in Florida on Feb. 7, on a United Launch Alliance Atlas V rocket. It will use the gravity of Venus and Earth to swing itself out of the ecliptic plane so that it can take a first-ever bird's eye view at the sun's poles.

The ecliptic plane is the swath of space, roughly aligned with the sun's equator, where all planets orbit.

"Up until Solar Orbiter, all solar imaging instruments have been within the ecliptic plane or very close to it," said Russell Howard, space scientist at the U.S. Naval Research Lab. "Now, we'll be able to look down on the sun from above."

The only prior spacecraft to fly over the sun's poles was the Ulysses spacecraft developed by NASA and ESA. It was launched in 1990 and retired in 2009. Ulysses never got closer than Earth-distance to the sun and only carried instruments that measure the space environment immediately around the spacecraft.

Solar Orbiter will pass inside the orbit of Mercury carrying four in situ instruments and six remote-sensing imagers, which see the sun from afar, according to NASA.

Over the mission's seven-year lifetime, Solar Orbiter will reach an inclination of 24 degrees above the sun's equator, increasing to 33 degrees with an additional three years of extended mission operations. At closest approach the spacecraft will pass within 26 million miles (42 million kilometers) of the sun.

It has a titanium heat shield with a calcium phosphate coating that withstands temperatures over 480 degrees Celsius.

The Solar Orbiter is expected to have a straight-on view on solar winds from solar poles, thus resulting in more accurate data. Also, it may find what makes the 11-year cycle of sunspot waxes and wanes.

Solar Orbiter will be NASA's second major mission to the inner solar system in recent years, following the launch of Parker Solar Probe in 2018.

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011105521387380201
主站蜘蛛池模板: 91av原创 | 欧美精品久久久久久久久免 | 97超碰人人干 | 欧美日韩国产综合一区二区 | 久久精品精品电影网 | 久久久免费网站 | av手机在线播放 | 日韩黄视频 | av电影免费在线播放 | 永久黄网站色视频免费观看w | 国产亚洲字幕 | 久久五月天婷婷 | 日本在线观看一区二区 | 在线黄色免费 | 久久在线观看 | a成人v在线 | 激情五月在线视频 | 麻豆视传媒官网免费观看 | 蜜桃传媒一区二区 | 亚洲综合五月 | 免费在线观看视频a | 欧美性生活免费看 | 91在线91拍拍在线91 | 91在线91拍拍在线91 | 久久久久久久福利 | 国内综合精品午夜久久资源 | 日韩免费三区 | 丁香资源影视免费观看 | 婷婷在线网站 | 国产91丝袜在线播放动漫 | 人人添人人 | 日韩性片 | 久久激情五月丁香伊人 | 欧美日韩国产精品爽爽 | 久久精品亚洲 | 97成人在线 | 五月天精品视频 | 一二区电影| 国产 视频 久久 | 成人中文字幕+乱码+中文字幕 | 国产精品久久久久久妇 | 亚洲撸撸 | 久久五月天婷婷 | 中文乱幕日产无线码1区 | 99热这里只有精品8 久久综合毛片 | 日本久久中文字幕 | 国内小视频 | 久久久久久久久爱 | 精品一区二三区 | 亚洲综合少妇 | 亚洲理论在线观看 | 免费看污黄网站 | 色综合久久久久综合体 | 国产精品免费在线播放 | 久久精品免费播放 | 91新人在线观看 | 国产一区二区不卡在线 | 五月婷婷六月丁香在线观看 | 天天爱天天射天天干天天 | 国产精品999久久久 久产久精国产品 | 91私密保健 | 久久久久这里只有精品 | 日韩精品第1页 | 欧美一区二区三区在线看 | 亚洲三级在线免费观看 | 欧洲一区二区三区精品 | 欧美少妇影院 | 亚洲综合导航 | 97超碰人人爱 | 国产蜜臀av | 精品电影一区 | 国产精品久久久久影视 | 麻豆影视在线观看 | 精品a视频 | www视频免费在线观看 | 在线天堂亚洲 | 在线观看中文字幕亚洲 | 欧美成人a在线 | 国产精品免费大片视频 | 国产精品日韩在线播放 | 最新日韩电影 | 在线日韩视频 | 特级片免费看 | 在线播放一区二区三区 | 久久伊人精品天天 | 日韩av一区二区在线播放 | 久久午夜网 | 国内小视频在线观看 | 中文字幕av免费在线观看 | www.xxxx欧美| 中文字幕 国产视频 | 亚洲深夜影院 | 色多多视频在线观看 | 青青河边草免费 | 国产午夜剧场 | 91亚·色| 亚洲一区欧美精品 | 99色国产 | 日韩精品在线观看av |