保护地球，探索宇宙，发现文明
An array of 960 microphones is seen here off the end of runway 11 at Boeing’s research facility near Glasgow, Montana. The microphones were used by NASA to record the sound of a low-flying 787-10 Dreamliner passing overhead as part of the Chicago-based company’s 2020 ecoDemonstrator program during late August and early September. NASA researchers are studyin...
This illustration shows the hot, dense, expanding cloud of debris stripped from neutron stars just before they collided. This cloud produces a kilonova; that is an astronomical event that occurs when two neutron stars or a neutron star and a black hole merge into each other. This cloud shows the visible and infrared light. Within this neutron-rich debris, la...
Two of Orion’s four recently installed solar array wings are exposed and surrounded by the panels that will protect it during launch and ascent. Three spacecraft adapter jettison fairings are being prepared for installation and will be moved into place by technicians with Lockheed Martin, lead contractor for Orion. They will be secured around the spacecraft,...
This image, taken with the NASA/ESA Hubble Space Telescope, depicts a special class of star-forming nursery known as Free-floating Evaporating Gaseous Globules, or frEGGs for short. This object is formally known as J025157.5+600606. When a massive new star starts to shine while still within the cool molecular gas cloud from which it formed, its energetic rad...
Scientists have come to realize that, just below the surface, about one third of Mars is covered in ice. We study this ice to learn about Mars’ ancient climate and astronauts’ future water supplies. Sometimes we see the buried ice because cliffs form like the one in this image. On the brownish, dusty cliff wall, the faint light-blue-colored ice s...
NASA astronaut Kate Rubins is seen as she has her Russian Sokol suit pressure checked as she and fellow crewmates Sergey Kud-Sverchkov and Sergey Ryzhikov of Roscosmos prepare for their Soyuz launch to the International Space Station Wednesday, Oct. 14, 2020, at the Baikonur Cosmodrome in Kazakhstan. The trio launched at 1:45 a.m. EDT to begin a six-month mi...
The brightest stars embedded in nebulae throughout our galaxy pour out a torrent of radiation that eats into vast clouds of hydrogen gas – the raw material for building new stars. This etching process sculpts a fantasy landscape where human imagination can see all kinds of shapes and figures. This nebula in the constellation of Cassiopeia has flowing veils o...
This beautiful, blushing nebula is unique amongst its counterparts. While many of the nebulae visible in the night sky are emission nebulae — clouds of dust and gas that are hot enough to emit their own radiation and light — Caldwell 4, otherwise known as the Iris Nebula or NGC 7023, is a reflection nebula. This means that its color comes from the scattered ...
In this image from July 2020, NASA spacewalkers (from left) Bob Behnken and Chris Cassidy give a thumbs up during a spacewalk to install hardware and upgrade International Space Station systems. They were photographed by the crew from inside the cupola, the orbiting lab’s “window to the world.” Behnken arrived on the station as a member of ...
The tip of the Canadarm2 robotic arm, also formally known as the Latching End Effector, is pictured as the International Space Station soared over the South Pacific Ocean and into an orbital sunrise in this image taken on Sept. 30, 2020. The Canadarm2 is designed to grapple hardware, science experiments, and approaching spaceships. Image Credit: NASA 在2020年9...