保护地球，探索宇宙，发现文明
Stars leave streaks of light in concentric circles in this March 16, 2012, view from the International Space Station. To create this composite long exposure, NASA astronaut Don Pettit combined multiple 30-second exposures from a mounted camera on the space station into one image. The orbiting laboratory travels 5 miles per second, traveling around our planet...
This Feb 3, 2023, enhanced-color image from Landsat 9 highlights a green and blue patchwork pattern in flooded rice fields in southwestern Louisiana. Raised levees used for water management form the grid pattern between the fields, which appear dark blue. As it flowed through several southern states over tens of thousands of years, the Mississippi River left...
Titan, Saturn’s largest moon, looks quite small in comparison to the giant planet behind it in this natural color view from the Cassini-Huygens spacecraft. This image from Aug. 29, 2012, also shows seasonal changes occurring on Saturn; as spring comes to the northern Saturnian hemisphere, the azure blue seen fades, while winter in the south adds a bluish hue...
Maat Mons, a volcano on Venus that has shown signs of a recent eruption, is in the black square near the planet’s equator in this annotated, computer-simulated global map of Venus’ surface. Scientists discovered direct geological evidence of recent volcanic activity on Venus by poring over archival radar images taken over 30 years ago by NASA’s Magellan miss...
An orbital sunrise reveals cloud tops above the Pacific Ocean northeast of New Zealand as the International Space Station orbited 260 miles above on Feb. 10, 2023. Astronauts aboard the space station see 16 sunrises and sunsets per day due to their high orbital velocity—17,500 miles per hour. In the more than 20 years that people have been living aboard, the...
Elementary school students eagerly raise their hands as Diana Trujillo, technical group supervisor for sequence planning and execution and tactical mission lead for the Mars Perseverance rover, speaks to them on March 13, 2023. Born and raised in Colombia, Trujillo immigrated to the U.S. at the age of 17 to pursue her dream of working for NASA. She has held ...
The SpaceX Dragon Endurance spacecraft is seen as it lands with Crew-5 mission members aboard on Saturday, March 11, 2023. The crew returned in a parachute-assisted splashdown at 9:02 p.m. EST. During the 156.5 days they spent aboard the International Space Station as part of Expedition 68, Crew-5 participated in several spacewalks to prepare the space stati...
The Moon is seen passing in front of the Sun during a solar eclipse from Ross Lake, Northern Cascades National Park, Washington on Aug. 21, 2017. A total solar eclipse swept across a narrow portion of the contiguous United States from Lincoln Beach, Oregon to Charleston, South Carolina. A partial solar eclipse was visible across the entire North American con...
Former astronaut Eileen Collins sits at the pilot’s station aboard space shuttle Discovery during a hotfiring procedure on Feb. 2, 1995. Selected by NASA in January 1990, Collins became the first woman pilot of a Space Shuttle and the first woman to command a shuttle mission. Over four missions—STS-63 Discovery, STS-84 Atlantis, STS-93 Columbia, and STS-114 ...
Infrared light surges out from the Dumbbell Nebula, also known as Messier 27, in this Aug. 10, 2011, image from NASA’s Spitzer Space Telescope. This nebula was discovered in 1764 by Charles Messier. It was the first in a class of objects, now known as planetary nebulae, to make it into Messier’s catalog of astronomical objects. Planetary nebulae, histo...