
AMPTE Artificial Comet Experiment Created a Plasma Tail
On December 27, 1984, the AMPTE mission released barium into the solar wind to create and study an artificial comet-like cloud with a plasma tail.
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On December 27, 1984, the AMPTE mission released barium into the solar wind to create and study an artificial comet-like cloud with a plasma tail.
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Point Nemo is used by space agencies as a controlled reentry zone for spacecraft and other large orbital hardware because it is the most remote spot in the world’s oceans.
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NASA’s LCROSS mission deliberately crashed a rocket stage into a lunar crater and confirmed that water was present in the resulting plume, showing that some permanently shadowed regions on the Moon contain substantial ice.
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Apollo 11’s original SSTV moonwalk source tapes are missing, so the footage people usually see is a lower-resolution broadcast conversion of the live lunar TV signal.
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The article explains how Apollo seismic experiments showed that the Moon experiences impacts and quakes whose vibrations can persist unusually long, revealing a dry, fractured interior that makes the Moon seem to “ring.”
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During Apollo 12’s launch, a lightning strike caused telemetry problems, but the “SCE to AUX” command helped restore usable data and keep the mission going.
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Beagle 2 was later identified on Mars by NASA orbit images, showing the lander had reached the surface but failed to deploy fully and transmit.
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A Long March 3B rocket carrying Intelsat 708 failed seconds after liftoff, crashed near the launch site, and led to scrutiny of launch safety and secrecy in China.
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This list explains how the YORP effect—tiny torques from sunlight—has been observed or strongly inferred to alter asteroid spin, surface stability, and in some cases trigger mass shedding, binary formation, or breakup.
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During Gemini 3, John Young sneaked a corned beef sandwich into orbit, and the crumbs helped highlight why NASA tightly controlled food in spacecraft.
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Luna 9 became the first spacecraft to make a soft landing on the Moon, and Jodrell Bank later decoded its image signals to publish the first lunar surface panorama before the Soviet release.
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NASA’s New Horizons spacecraft carried a small capsule containing Clyde Tombaugh’s ashes, making its trip to Pluto a symbolic memorial to the astronomer who discovered the dwarf planet.
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This list highlights six space missions whose operations lasted far beyond their original plans or that were successfully revived after major setbacks, leading to major additional scientific returns.
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The article explains that U.S. law allows private ownership of asteroid resources after extraction, while the Outer Space Treaty forbids countries from claiming sovereignty over celestial bodies.
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Many Martian recurring slope lineae, once thought to hint at salty liquid water, are now more strongly explained as dark streaks made by dry dust and sand moving downhill.
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Luna 3’s 1959 mission photographed the Moon’s far side by developing, scanning, and radioing images from inside the spacecraft instead of sending film back to Earth.
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Hubble’s early blurry images were caused by a tiny polishing error in its primary mirror, later corrected by astronauts in 1993.
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Astronomers observed that radio pulses from the Crab pulsar were briefly delayed and echoed because small plasma filaments in the Crab Nebula crossed the line of sight and distorted the signal.
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The article highlights how compact space instruments have produced outsized scientific discoveries by measuring dust, water, minerals, magnetic fields, elements, and radiation across multiple missions.
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In 2007, tardigrades on ESA’s FOTON-M3 mission were exposed to vacuum and ultraviolet radiation in space, and some survived, with a few still able to reproduce afterward.
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OSIRIS-REx observed asteroid Bennu ejecting small rocks and dust from its surface, showing the rubble-pile asteroid is more active than expected.
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China’s Chang’e 4 mission used the Queqiao relay satellite to maintain communications with the Moon’s far side during its landing and rover operations.
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The 1979 Moon Treaty proposed an international framework for using lunar resources, but key space powers never ratified it, leaving current rules over Moon mining unsettled.
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A 2020 near-Earth object called 2020 SO was initially mistaken for an asteroid, but orbital analysis showed it was actually the Centaur upper stage from NASA’s 1966 Surveyor 2 mission.
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Karl Jansky’s investigation of radio static in the early 1930s revealed radio noise coming from the Milky Way, helping launch radio astronomy.
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Modern lunar imaging relocated Lunokhod 1, allowing scientists to use its onboard laser retroreflector again for lunar laser ranging.
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HD 10697 (109 Piscium) was found to have a hidden companion whose mass is estimated at about six times Jupiter’s, inferred from the star’s slight wobble rather than direct imaging.
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In 2013, astronomers discovered that the centaur Chariklo has a ring system, making it the first known small body in the Solar System found to have rings.
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Soviet cosmonauts in 1985 successfully reached the silent space station Salyut 7 and manually restored its power and key systems.
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Kepler’s reaction wheel failures ended its original steady-staring mission, but engineers repurposed the spacecraft as K2, which used solar pressure to maintain pointing and continue exoplanet observations in a new survey mode.
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