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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA’s Lucy spacecraft has its next flyby target, the small main belt asteroid Donaldjohanson, in its sights. By blinking between images captured by Lucy on Feb. 20 and 22, this animation shows the perceived motion of Donaldjohanson relative to the background stars as the spacecraft rapidly approaches the asteroid.
NASA’s Lucy spacecraft’s first views of the asteroid Donaldjohanson. The asteroid is circled on the left to guide the eye.NASA/Goddard/SwRI/Johns Hopkins APL Lucy will pass within 596 miles (960 km) of the 2-mile-wide asteroid on April 20. This second asteroid encounter for the Lucy spacecraft will serve as a dress-rehearsal for the spacecraft’s main targets, the never-before-explored Jupiter Trojan asteroids. Lucy already successfully observed the tiny main belt asteroid Dinkinesh and its contact-binary moon, Selam, in November 2023. Lucy will continue to image Donaldjohanson over the next two months as part of its optical navigation program, which uses the asteroid’s apparent position against the star background to ensure an accurate flyby.
Donaldjohanson will remain an unresolved point of light during the spacecraft’s long approach and won’t start to show surface detail until the day of the encounter.
From a distance of 45 million miles (70 million km), Donaldjohanson is still dim, though it stands out clearly in this field of relatively faint stars in the constellation of Sextans. Celestial north is to the right of the frame, and the 0.11-degree field of view would correspond to 85,500 miles (140,000 km) at the distance of the asteroid. In the first of the two images, another dim asteroid can be seen photobombing in the lower right quadrant of the image. However, just as the headlights of an approaching car often appear relatively stationary, Donaldjohanson’s apparent motion between these two images is much smaller than that of this interloper, which has moved out of the field of view in the second image.
These observations were made by Lucy’s high-resolution camera, the L’LORRI instrument — short for Lucy LOng Range Reconnaissance Imager — provided by the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland.
Asteroid Donaldjohanson is named for anthropologist Donald Johanson, who discovered the fossilized skeleton — called “Lucy” — of a human ancestor. NASA’s Lucy mission is named for the fossil.
Lucy’s principal investigator, Hal Levison, is based out of the Boulder, Colorado, branch of Southwest Research Institute, headquartered in San Antonio. NASA’s Goddard Space Flight Center in Greenbelt, Maryland, provides overall mission management, systems engineering, and safety and mission assurance. Lockheed Martin Space in Littleton, Colorado, built the spacecraft. Lucy is the 13th mission in NASA’s Discovery Program. NASA’s Marshall Space Flight Center in Huntsville, Alabama, manages the Discovery Program for the Science Mission Directorate at NASA Headquarters in Washington.
For more information about NASA’s Lucy mission, visit: https://www.nasa.gov/lucy
By Katherine Kretke
Southwest Research Institute
Media Contact:
Nancy N. Jones
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Last Updated Feb 25, 2025 Related Terms
Lucy General Goddard Space Flight Center Planetary Science The Solar System Trojan Asteroids View the full article
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By USH
Have you ever looked up and seen the sky split into two distinct colors, one side glowing red while the other remains a dull gray? At first glance, it may seem like a natural optical effect, but it is not!
Watch video of this bizarre sky phenomenon below.
This phenomenon has been observed before, and many believe it is not just a random occurrence. Instead, it could be the result of large-scale geoengineering projects, deliberate interventions in Earth's climate system. These efforts, often carried out under the guise of combating climate change, may actually be disrupting natural atmospheric processes.
Strange, unnatural-looking clouds, such as square formations and other unusual weather anomalies, may also be linked to these operations.
Additionally, the infamous chemtrails are a product of weather manipulation, involving the release of chemicals into the lower stratosphere. Proponents argue that these methods help mitigate global warming, but that is not true, these sprayings really doing more harm than good.
While mainstream narratives push the climate change (hoax) agenda and link climate change to human activity and greenhouse gas emissions, an increasing number of scientists step forward and explain that natural Earth cycles, particularly its position relative to the sun, play a significant role in climate shifts. They point to Milankovitch cycles—long-term variations in Earth's orbit and axial tilt, which have historically played a key role in global temperature changes.
Interestingly, it seems that some high-ranking government officials are beginning to question the effects of geoengineering. If action is taken to regulate or halt these practices, we may once again witness unaltered, natural skies. Until then, all we can do is observe, question, and seek the truth. View the full article
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By European Space Agency
The latest analysis from the European Space Agency (ESA) Planetary Defence Office has reduced the probability that asteroid 2024 YR4 might impact Earth in 2032 to 0.001%.
View the full article
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