Space Stories: Oxygen Issues on Europa, the Puzzling Expansion Rate of the Universe, and Mini Moon-Bound Rovers

Posted on by onespaceman2000
Image (Credit): Europa as captured by NASA’s Galileo spacecraft. (NASA/JPL/Ted Stryk)

Here are some recent stories of interest.

—The Columbian: “Europa Might Have Less Oxygen Than Expected“

New research suggests there’s less oxygen on the icy surface of Jupiter’s moon Europa than thought — and that could affect what, if any, life might be lurking in the moon’s underground ocean. Even with little or no oxygen, microbes might still be bustling around in the ocean believed to exist miles beneath Europa’s frozen crust. As for what else, “who knows,” said NASA scientist Kevin Hand, who was not involved in the study published Monday in Nature Astronomy.

—Webbtelescope.org: “NASA’s Webb, Hubble Telescopes Affirm Universe’s Expansion Rate, Puzzle Persists“

The best measurements from Hubble show the universe is now expanding faster than predicted based on observations of how it looked shortly after the big bang. These observations were made by the Planck satellite mapping of the cosmic microwave background radiation – sort of a blueprint for how the universe would evolve structure after it cooled down from the big bang. The simple solution to the dilemma is to say that maybe Hubble observations are wrong due to some creeping inaccuracy in its deep-space yardstick. Then along came the James Webb Space Telescope to crosscheck Hubble’s results. Webb’s sharp infrared views of Cepheids agreed with Hubble data. Webb confirmed that the Hubble telescope’s keen eye was right all along.

—NASA JPL: “NASA’s Network of Small Moon-Bound Rovers Is Ready to Roll“

A trio of small rovers that will explore the Moon in sync with one another are rolling toward launch. Engineers at NASA’s Jet Propulsion Laboratory in Southern California recently finished assembling the robots, then subjected them to a punishing series of tests to ensure they’ll survive their jarring rocket ride into space and their travels in the unforgiving lunar environment. Part of a technology demonstration called CADRE (Cooperative Autonomous Distributed Robotic Exploration), each solar-powered rover is about the size of a carry-on suitcase.

An Interesting Message for Europa

Posted on by onespaceman2000
Image (Credit): One side of the panel attached to the Europa Clipper showing “water” ” in 103 languages (explained below). (NASA/JPL-Caltech)

In past NASA missions to the outer planets of our solar system, we attached messages for any distant civilization that might be out there. Both the Pioneer and Voyager missions contained such messages.

So what about NASA’s Europa Clipper mission to Jupiter’s moon set to launch in October? It too will have some messages, but these appear to be for the inhabitants of the moon rather than some distant civilization.

A triangular 7″ x 11″ metal plate attached to the spacecraft destined for Europa will carry messages on both sides. The image above shows one of these sides containing features waveforms that are visual representations of the sound waves formed by the word “water” in 103 languages.

The other side of the plate (shown below) contains a variety of messages:

  • the Drake Equation, which estimate the possibility of finding advanced civilizations beyond Earth;
  • U.S. Poet Laureate Ada Limón’s handwritten “In Praise of Mystery: A Poem for Europa”;
  • a reference to the radio frequencies considered plausible for interstellar communication; and
  • a portrait Ron Greeley, whose early efforts laid the foundation for Europa Clipper.

The spacecraft will also carry a silicon microchip containing more than 2.6 million names that were submitted by the public as part of NASA’s “Message in a Bottle” campaign.

This is all interesting in itself, but not really a message to others. I expect it is not intended for anyone else but ourselves because the Europa Clipper is not expected to leave the solar system but instead crash into another of Jupiter’s moons – Ganymede.

Note: You may wonder about the message on the New Horizons spacecraft that is also travelling to the edges of our solar system. That message is somewhat controversial. I will let you read about that one in this Slate article, “Ashes and Small Change.”

Image (Credit): One side of the panel attached to the Europa Clipper showing a poem, portrait, and more (explained above). (NASA/JPL-Caltech)

Space Quote: No Invading Aliens to Report

Posted on by onespaceman2000

“AARO found no evidence that any USG investigation, academic-sponsored research, or official review panel has confirmed that any sighting of a UAP represented extraterrestrial technology.“

-Conclusion of the Pentagon’s All-Domain Anomaly Resolution Office (AARO) February 2024 report, Report on the Historical Record of U.S. Government Involvement with Unidentified Anomalous Phenomena (UAP), covering claims of UAP dating from 1945 through October 2023. Some of the other conclusions in this report include:

  • AARO found no empirical evidence for claims that the USG and private companies have been reverse-engineering extraterrestrial technology. AARO determined, based on all information provided to date, that claims involving specific people, known locations, technological tests, and documents allegedly involved in or related to the reverse-engineering of extraterrestrial technology, are inaccurate.
  • AARO assesses that all of the named and described alleged hidden UAP reverse engineering programs provided by interviewees either do not exist; are misidentified authentic, highly sensitive national security programs that are not related to extraterrestrial technology exploitation; or resolve to an unwarranted and disestablished program.
Posted in UFO

In Case You Missed It/Video: The Stakes Are High with Our Return to the Moon

Posted on by onespaceman2000
Image (Credit): Moving the Artemis I mission into place. (NASA)

With the recent glitches related to the two commercial Moon missions, an earlier NASA video on the Artemis program became all too relevant. In the video, “Farther and Faster: NASA’s Journey to the Moon with Artemis,” we hear that the stakes are high as we attempt to return to the Moon, and how we could be the generation that loses the Moon if we don’t get it right.

In addition to the risks, the video also highlights the great successes already with the Artemis I mission, as you may recall from back in 2022:

Over the course of 25.5 days, Orion performed two lunar flybys, coming within 80 miles (129 kilometers) of the lunar surface. At its farthest distance during the mission, Orion traveled nearly 270,000 miles (435,000 kilometers) from our home planet. On Dec. 11, 2022, NASA’s Orion spacecraft successfully completed a parachute-assisted splashdown in the Pacific Ocean at 9:40 a.m. PST (12:40 p.m. EST) as the final major milestone of the Artemis I mission.

Artemis I set new performance records, exceeded efficiency expectations, and established new safety baselines for humans in deep space. This is a prelude to what comes next—following the success of Artemis I, human beings will fly around the Moon on Artemis II.

It is worth pondering what we have ahead of us. NASA may be having a few issues with its commercial partners, but the main mission has done well. We cannot be discouraged with a few delays as long as we keep the course. We have done it before and there is no reason we cannot do it again. I say slow and steady.

Mars is the goal, but we need to prove ourselves with the Moon. Check out the video and determine for yourself if we have already made a fair amount of progress.