Sometimes scientists use enhanced-color images to reveal subtle variations on the surface of Mars. This view from our Mars Odyssey orbiter highlights details in clouds hovering over canyons in the Margaritifer Terra region in December. More from Odyssey: science.nasa.gov/mission/odyssey/ | NASA Mars

On Aug. 28, 1993, NASA's Galileo spacecraft flew by the asteroid Ida on its way to Jupiter. Space History Archives👉 https://space-com.visitlink.me/qOOKk2 Galileo was the first spacecraft to fly by an asteroid in the asteroid belt. Ida was actually the second one it visited after another flyby of the asteroid Gaspra in 1991. It whizzed by Ida going almost 28,000 miles per hour and came within 1,500 miles of the asteroid's surface. During the encounter, Galileo actually discovered a tiny moon orb

On Aug. 27, 1962, NASA launched Mariner 2, the world's first successful interplanetary spacecraft. Space History Archives👉 https://space-com.visitlink.me/qOOKk2 Mariner 2 flew by Venus after a 3½-month voyage through space. The mission launched just one month after the Mariner 1 mission failed during launch. After departing from Cape Canaveral, Mariner 2 almost met the same fate when an electrical problem with the Atlas-Agena rocket caused it to start rolling, which made it unable to respond to

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