Like Earth, Mars is surrounded by an ionosphere—the part of its upper atmosphere where radiation from the sun knocks ...

Jezero Crater, once a lake bed some 3.5 billion years ago, has become the focus of NASA’s search for signs of past life. It’s ...

欧洲航天局ExoMars痕量气体轨道器上的彩色立体表面成像系统（CaSSIS）拍摄的奥林匹斯山光环斜坡上覆盖着明暗条纹。该图像覆盖面积约50平方公里，拍摄于2024年10月3日。火星位置：北纬26.5°，东经223.8°。CaSSIS图像MY37_030618_155_3。图片来源：ESA ...

IT之家 6 月 4 日消息，数百年来，科学家们一直想知道为什么火星是红色的。长期以来的理论认为，这颗行星的锈红色来自于赤铁矿（hematite），这是一种在干燥条件下形成的富含铁的矿物。然而，最新的研究提出了另一种可能性：水铁矿（ferrihydrite），一种在潮湿环境中形成的氢氧化氧铁氧化物矿物，可能是火星红色的真正来源。

The team also turned to other cameras orbiting Mars, such as the CaSSIS imager on ESA’s Trace Gas Orbiter and MRO’s HiRISE, to collect more color information in high resolution, as well as to monitor ...

The ExoMars Trace Gas Orbiter, another of ESA’s missions, has captured detailed images of these spidery formations. It offers a unique view of both the dark spots on Mars’ surface and the intricate, ...

Every year the robots and satellites scientists have sent to Mars make discoveries that help us learn more about the Red ...

In May of 2023, as part of a science-art project, the European Space Agency’s ExoMars Trace Gas Orbiter sent a signal to Earth as a simulated “alien message.” Although citizen scientists ...

A father and daughter team based in the U.S. have decoded a mock "alien signal" beamed from ESA's ExoMars Trace Gas Orbiter a year ago — but the meaning of the extraterrestrial message remains a ...

The ExoMars’ Trace Gas Orbiter has repurposed its antenna, allowing researchers to explore the Martian atmosphere in unprecedented ways. With the help of this modified equipment, a team, which ...

An antenna on ExoMars’ Trace Gas Orbiter has been given a new lease of life, helping researchers delve into the Martian atmosphere like never before. Using the repurposed equipment, a team including ...