哈勃望远镜重访面纱星云

哈勃望远镜重访面纱星云

ByNASA中文

This image taken by the NASA/ESA Hubble Space Telescope revisits the Veil Nebula, which was featured in a previous Hubble image release. In this image, new processing techniques have been applied, bringing out fine details of the nebula’s delicate threads and filaments of ionized gas. To create this colorful image, observations were taken by Hubble’s Wide Field Camera 3 instrument using five different filters. The new post-processing methods have further enhanced details of emissions from doubly ionized oxygen (seen here in blues), ionized hydrogen, and ionized nitrogen (seen here in reds). The Veil Nebula lies around 2,100 light-years from Earth in the constellation of Cygnus (the Swan), making it a relatively close neighbor in astronomical terms. Only a small portion of the nebula was captured…

国际空间站从太空俯瞰太阳在地球上空的景色

国际空间站从太空俯瞰太阳在地球上空的景色

ByNASA中文

This view of Earth’s horizon as the Sun sets over the Pacific Ocean was taken by the Expedition 7 crew onboard the International Space Station in 2003. Anvil tops of thunderclouds are also visible. #TBT Image Credit: NASA 这张太阳在太平洋上落下时地球地平线的照片是2003年由国际空间站上的第7号探险队机组成员拍摄的。还可以看到雷云的砧顶。 #TBT 图片来源:美国国家航空航天局

佩妮·J·佩蒂格鲁，NASA马歇尔太空飞行中心国际空间站有效载荷通信经理

佩妮·J·佩蒂格鲁，NASA马歇尔太空飞行中心国际空间站有效载荷通信经理

ByNASA中文

​As a NASA payload communications manager, or PAYCOM, Penny J. Pettigrew spends most days in the Payload Operations Integration Center at NASA’s Marshall Space Flight Center in Huntsville, Alabama, communicating with coworkers some 250 miles overhead – the astronauts conducting scientific research aboard the International Space Station, as shown in this image from 2017. In 1989, Pettigrew, a space program enthusiast from an early age, attended Space Camp at the U.S. Space & Rocket Center in Huntsville, an experience which opened her eyes to all the opportunities in the “Rocket City.” She began pursuing her childhood dream in earnest when she attended the Colorado School of Mines in Golden, where she earned her undergraduate degree in Chemistry in 1992. In 1996, she received her Master’s…

探索富含金属的小行星普赛克

探索富含金属的小行星普赛克

ByNASA中文

Set to launch next year, NASA’s Psyche spacecraft will explore a metal-rich asteroid of the same name in the main asteroid belt between Mars and Jupiter. A major component of NASA’s Psyche spacecraft has been delivered to the agency’s Jet Propulsion Laboratory in Southern California, where the phase known as assembly, test, and launch operations is now underway. Over the next year, the spacecraft will finish assembly and undergo rigorous checkout and testing before it’s shipped to Cape Canaveral, Florida, for an August 2022 launch to the main asteroid belt. This illustration depicts the metal-rich asteroid Psyche, which is located in the main asteroid belt between Mars and Jupiter. Image Credit: NASA/JPL-Caltech/ASU 美国国家航空航天局(NASA)将于明年发射普赛克(Psyche)宇宙飞船，探测火星和木星之间的主小行星带中富含金属的一颗同名小行星。 美国国家航空航天局普赛克宇宙飞船的一个主要部件已经交付给该局位于南加州的喷气推进实验室，目前正在那里进行组装、测试和发射操作。在接下来的一年里，飞船将完成组装，并进行严格的检查和测试，然后被运送到佛罗里达州卡纳维拉尔角，并于2022年8月发射到主小行星带。 这幅插图描绘了富含金属的小行星普赛克，它位于火星和木星之间的主要小行星带。 图片来源：NASA/JPL-Caltech/ASU

距太阳系最近的系外行星

距太阳系最近的系外行星

ByNASA中文

This artist’s concept is of a Jupiter-mass planet orbiting the nearby star Epsilon Eridani. Located 10.5 light-years away, it was the closest known exoplanet to our solar system when it was discovered in 2007. The planet is in an elliptical orbit that carries it as close to the star as Earth is from the Sun, and as far from the star as Jupiter is from the Sun. Epsilon Eridandi is a young star, only 800 million years old. It is still surrounded by a disk of dust that extends 20 billion miles from the star. The disk appears as a linear sheet of reflecting dust in this view because it is seen edge-on from the planet’s orbit, which is in the same plane as the…

第65号远征队机组人员新闻发布会

第65号远征队机组人员新闻发布会

ByNASA中文

From left to right, Expedition 65 backup crew members NASA astronaut Anne McClain and Russian cosmonauts Oleg Artemyev and Anton Shkaplerov of Roscosmos, and Expedition 65 prime crew members, Russian cosmonauts Oleg Novitskiy and Pyotr Dubrov of Roscosmos and NASA astronaut Mark Vande Hei, are seen during a press conference on Wednesday, March 24, 2021 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Expedition 65 is slated to launch on April 9. Image Credit: NASA/GCTC/Andrey Shelepin 2021年3月24日星期三，在俄罗斯星城加加林宇航员培训中心(GCTC)举行的新闻发布会上，从左至右，是第65号远征队的后备机组人员，美国宇航局宇航员安妮·麦克莱恩、俄罗斯宇航员奥列格·阿尔特米耶夫和安东·什卡普列罗夫，以及第65号远征队的主要机组人员，俄罗斯宇航员奥列格·诺维茨基和俄罗斯航天局的彼得·杜布罗夫，以及NASA宇航员马克·范德·黑。第65号远征队探险计划于4月9日发射。 图片来源:NASA/GCTC/Andrey Shelepin

火星的冰霜沙丘

火星的冰霜沙丘

ByNASA中文

A field of sand dunes occupies this frosty 5-kilometer diameter crater in the high-latitudes of the northern plains of Mars. Some dunes have separated from the main field and appear to be climbing up the crater slope along a gully-like form. The surface of the main dune field is characterized by a series of dark-toned polygonal patterns. These may be the result of seasonal frost processes. Several of the steeper dune slopes, pointing in the downwind direction, host narrow furrows suggesting the start of gully formation. The crater floor contains a variety of textures, including lobate and striped patterns that indicate seasonal thaw caused by sublimating ice. Broad downslope movement of materials on the crater slopes opposite the dune field superficially resemble gullies, except that…

凯特·鲁宾斯的工作是升级国际空间站

凯特·鲁宾斯的工作是升级国际空间站

ByNASA中文

This image, taken on March 5, 2021, shows NASA astronaut Kate Rubins during a spacewalk to install solar array modification kits to ready the International Space Station for newer, more powerful solar arrays being delivered. VIDEO: Vice President Harris Calls NASA Astronauts Shannon Walker and Kate Rubins #WomensHistoryMonth Image Credit: NASA 这张摄于2021年3月5日的照片显示，美国宇航局宇航员凯特·鲁宾斯正在太空行走，为国际空间站安装更新、更强大的太阳能电池板改装套件。 视频:副总统哈里斯打电话给美国宇航局宇航员香农·沃克和凯特·鲁宾斯 #WomensHistoryMonth 图片来源:美国国家航空航天局

恒星结局的愿景

恒星结局的愿景

ByNASA中文

More than 11,000 years ago, a massive, supergiant star came to the end of its life. The star’s core collapsed to form an incredibly dense ball of neutrons, and its exterior was blasted away in an immense release of energy astronomers call a supernova. The light from this supernova first reached Earth from the direction of the constellation Cassiopeia around 1667 A.D. If anyone alive at the time saw it, they left no records. It is likely that large amounts of dust between the dying star and Earth dimmed the brightness of the explosion to the point that it was barely, if at all, visible to the unaided eye. The remnant of this supernova was discovered in 1947 from its powerful radio emission. Listed as…

探索地球的水

探索地球的水

ByNASA中文

NASA has investigated humanity’s impact on a number of our home planet’s natural resources and recently explored our impact on freshwater resources. Scientists have now completed the first global accounting of fluctuating water levels in Earth’s lakes and reservoirs – including ones previously too small to measure from space. The research, published March 3 in the journal Nature, relied on NASA’s Ice, Cloud and land Elevation Satellite 2 (ICESat-2), launched in September 2018. ICESat-2 sends 10,000 laser light pulses every second down to Earth. When reflected back to the satellite, those pulses deliver high-precision surface height measurements every 28 inches (70 centimeters) along the satellite’s orbit. With these trillions of data points, scientists can distinguish more features of Earth’s surface, like small lakes and ponds,…