Space Stories: Jovian Moons, Charon’s Canyons, and a New Space Telescope

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Image (Credit): Jupiter as seen by the NASA/ESA Hubble Space Telescope. (NASA, ESA, A. Simon (Goddard Space Flight Center), and M.H. Wong (University of California, Berkeley)

Here are some recent stories of interest.

—Live Science: “Jupiter Officially has the Most Moons in the Solar System, Discovery of 12 New Satellites Confirms“

Jupiter was already the king of the solar system, and new discoveries give the massive planet another way to reign supreme: It now has the most moons. Twelve new moons discovered orbiting Jupiter have been confirmed, bumping the count from 80 to 92, and knocking Saturn — which has 83 moons — down a peg. 

—Phys.org: “Models Explain Canyons on Pluto’s Large Moon Charon“

In 2015, when NASA’s New Horizons spacecraft encountered the Pluto-Charon system, the Southwest Research Institute-led science team discovered interesting, geologically active objects instead of the inert icy orbs previously envisioned. An SwRI scientist has revisited the data to explore the source of cryovolcanic flows and an obvious belt of fractures on Pluto’s large moon Charon. These new models suggest that when the moon’s internal ocean froze, it may have formed the deep, elongated depressions along its girth but was less likely to lead to cryovolcanoes erupting with ice, water and other materials in its northern hemisphere.

—Big Think: “NASA’s Habitable Worlds Observatory to Finally Answer the Epic Question: “Are we Alone?”“

…perhaps the biggest question of all — that of “Are we alone in the Universe?” — remains a mystery. While the current generation of ground-based and space-based telescopes can take us far into the Universe, this is a question that’s currently beyond our reach. To get there, we’ll need to directly image Earth-like exoplanets: planets with sizes and temperatures similar to Earth, but that orbit Sun-like stars, not the more common red dwarf stars like Proxima Centauri or TRAPPIST-1. Those capabilities are precisely what NASA is aiming for with its newly announced flagship mission: the Habitable Worlds Observatory. It’s an ambitious project but one that’s well worth it. After all, finding out we’re not alone in the Universe would quite possibly be the biggest revolution in all of science history.

Space Mission: What’s Up with Juno?

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Image (Credit): Image from “Where is Juno” earlier today showing its approximate location in relation to other bodies in the solar system. (NASA)

Are we witnessing the slow blinding of the Juno spacecraft? NASA is having trouble receiving images from the spacecraft’s solar-powered JunoCam. As a result, of the 258 images recently obtained by NASA, only 44 were usable. NASA is still investigating this issue and hopes to come up with a way to mitigate it.

Launched in August 2011, Juno has been a reliable workhorse studying the secrets of Jupiter while also capturing amazing images of the planet and its 80+ moons since it entered into Jovian orbit on July 4, 2016. Its extended mission was supposed to last until September 2025, harvesting additional data to assist NASA’s upcoming Europa Clipper mission as well as the European Space Agency’s Jupiter Icy Moons Explorer (JUICE) mission.

While Juno has numerous scientific instruments that are still plugging away producing key data on Jupiter and its surroundings, the images were an important link between the mission and the public. The images shown below are just a small sample of what has been sent back (click here for more). It will be a sad day when we can no longer see the Jovian neighborhood in this way.

Image (Credit): The shadow of the moon Io on Jupiter. (NASA/JPL-Caltech/SwRI/MSSS)
Image (Credit): The surface of Jupiter’s moon Ganymede. (NASA/JPL-Caltech/SwRI/MSSS)
Image (Credit): Jupiter’s south pole. (NASA/JPL-Caltech/SwRI/MSSS/John Landino)

Space Stories: Europeans Not Joining Chinese Space Station, the Milky Way is Odd, and Lucy has a New Target

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Image (Credit): A computer rendering of China’s new Tiangong space station in orbit. (Alejandro Miranda/Alamy Stock Photo)

Here are some recent stories of interest.

—Royal Astronomical Society: “European Space Agency Says it has No Plans to Send Astronauts to China’s Tiangong Space Station“

A top official with the European Space Agency said it had no plans to send European astronauts to the newly completed Chinese space station, making it clear for the first time that the agency is no longer committed to working with China in human space flight in the near future. “We are very busy supporting and ensuring our commitments and activities on the International Space Station,” ESA director general Josef Aschbacher told a press conference in Paris on Monday.

—Royal Astronomical Society: “Milky Way Found to be More Unique than Previously Thought“

Is the Milky Way special, or, at least, is it in a special place in the Universe? An international team of astronomers has found that the answer to that question is yes, in a way not previously appreciated. A new study shows that the Milky Way is too big for its “cosmological wall”, something yet to be seen in other galaxies. The new research is published in Monthly Notices of the Royal Astronomical Society.

—Southwest Research Institute: “SwRI-Led Lucy Team Announces New Asteroid Target“

NASA’s Lucy spacecraft will add another asteroid encounter to its 4-billion-mile journey. On Nov. 1, 2023, the Southwest Research Institute-led Lucy mission will get a close-up view of a small main belt asteroid to conduct an engineering test of the spacecraft’s innovative asteroid-tracking navigation system. The Lucy mission was already on course to break records by its planned visit of nine asteroids during its 12-year mission to tour the Jupiter Trojan asteroids, which orbit the Sun at the same distance as Jupiter. Originally, Lucy was not expected to get a close-up view of any asteroids until 2025, when it will fly by the main belt asteroid (52246) Donaldjohanson. However, the SwRI-led Lucy team identified a small, as-yet unnamed asteroid in the inner main belt as a potential new and useful target for the Lucy spacecraft.

Space Stories: JWST Confirms Earth-Size Exoplanet, Russia Sending Rescue Mission to ISS, and IO Erupts

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Image (Credit): James Webb Space Telescope (JWST) data associated with exoplanet LHS 475 b. (NASA, ESA, CSA, Leah Hustak (STScI))

Here are some recent stories of interest.

—Webb Space Telescope: “NASA’s Webb Confirms Its First Exoplanet“

Researchers confirmed an exoplanet, a planet that orbits another star, using NASA’s James Webb Space Telescope for the first time. Formally classified as LHS 475 b, the planet is almost exactly the same size as our own, clocking in at 99% of Earth’s diameter. The research team is led by Kevin Stevenson and Jacob Lustig-Yaeger, both of the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland.

—ABC News: “Russia Will Launch New Capsule to Return Space Station Crew“

Russia will send up a new capsule next month to bring back three space station crew members whose original ride home was damaged, officials said Wednesday. The two Russians and one American will stay several extra months at the International Space Station as a result of the capsule switch, possibly pushing their mission to close to a year, NASA and Russian space officials told reporters.

—MSN Science Alert: “Massive Volcanic Outburst Detected on Jupiter’s Hellish Moon Io“

In the space around Jupiter, a torus of plasma created and fed by Io’s volcanic emissions grew significantly richer between July and September of last year and persisted until December, showing the moon underwent a spate of volcanic activity that released a huge amount of material. For something that’s just a little bit bigger than Earth’s Moon, Io is an absolute beast of volcanism. It’s bristling with volcanoes, with around 150 of the 400 known volcanoes erupting at any given time, creating vast lakes of molten lava.

Space Stories: Passing of Apollo Astronaut Walter Cunningham, Opal on Mars, and Juno Recovers

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Image (Credit): Walter Cunningham adjusts his pressure suit before the Apollo 7 launch on October 11, 1968. (NASA)

Here are some recent stories of interest.

—NASA: “Apollo Astronaut Walter Cunningham Dies at 90“

Former astronaut Walter Cunningham, who flew into space on Apollo 7, the first flight with crew in NASA’s Apollo Program, died early Tuesday morning in Houston. He was 90 years old. “Walt Cunningham was a fighter pilot, physicist, and an entrepreneur – but, above all, he was an explorer. On Apollo 7, the first launch of a crewed Apollo mission, Walt and his crewmates made history, paving the way for the Artemis Generation we see today,” said NASA Administrator Bill Nelson. “NASA will always remember his contributions to our nation’s space program and sends our condolences to the Cunningham family.”

—New Atlas: “Curiosity Finds Opal on Mars – a Possible Water Source for Astronauts“

NASA’s Curiosity rover has discovered opal on Mars. The deposits may prove to be valuable to future Martian explorers not as jewelry but as a potential source of water. Opal is formed when water weathers silica-rich rocks, forming a solution that settles into cracks and crevices in the rock. Over time, this solution hardens into a solid lump that can be cloudy and dull or a dazzling display of color. Most supplies come from either Australia or Ethiopia, but now a new source has been discovered – Mars.

—Space.com: “Juno Spacecraft Recovering its Memory After Mind-blowing Jupiter Flyby, NASA Says“

NASA’s Juno probe is continuing to recover its memory at Jupiter after a data disruption interrupted communications between the spacecraft and its operators on Earth following a flyby of the giant planet in December. The Juno spacecraft’s latest flyby of Jupiter, its 47th close pass of the planet, was completed on Dec. 14. But as its operators at NASA’s Jet Propulsion Laboratory were receiving science data from the flyby they found they could no longer directly access the spacecraft’s memory. The team successfully rebooted Juno’s computer and on Dec. 17 they placed the spacecraft into “safe mode” with only essential systems operating as a precaution.