Space Stories: Dragon Docks with ISS, a Braille Astronomy Book, and an Exoplanet with No Atmosphere

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Image (Credit): The Dragon cargo capsule approaching the ISS. (NASA)

Here are some recent space-related stories of interest.

—NASA: “SpaceX Dragon Docks to Station Delivering New Science, Supplies“

At 7:05 a.m. EDT, the SpaceX Dragon spacecraft docked to the forward port of the International Space Station’s Harmony module.  The spacecraft carried over 5,000 pounds of scientific investigations and cargo to the orbiting laboratory on SpaceX’s 33rd commercial resupply services mission for NASA. The mission launched at 2:45 a.m. on Aug. 24 atop a SpaceX Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida. 

—Cincinnati Enquirer: “New Braille Book from Cincinnati Astronomer Lets You See Constellations Without Your Eyes“

Longtime readers will recognize the name Dean Regas, astronomy contributor to The Enquirer and former cohost of the PBS series “Star Gazers,” but they may not know that Regas is also the author of seven books about astronomy. His latest foray into the world of writing, “All About Orion,” is a children’s book focused on its namesake, Orion, with a twist: the book features braille writing and textile constellations as well as large print for blind and visually impaired children.

—Universe Today: “Another Earth-like Exoplanet Crossed Off the List: JWST Shows that GJ 3929b Has No Atmosphere“

The JWST’s latest exoplanet atmosphere target is GJ 3929 b. Astronomers discovered it in TESS data in 2022. “Our analysis confirms the planetary nature of the transiting planet GJ 3929 b,” the authors of the 2022 paper wrote. “Its mass and radius (~ 0.43 Earth masses and ~1.15 Earth radii) put it into the regime of small Earth-sized planets.” Earth-like planets attract attention for obvious reasons. Now the JWST’s results are in, and the once-promising planet appears to be barren.

SpaceX is Eager to Launch the Next Starship

Posted on by onespaceman2000
Image (Credit): Image from 2019 showing the SpaceX’s Starship prototype (left) next to a Falcon 1 rocket. (SpaceX)

Elon Musk is eager to get his Starship launches back on track, but the 10th launch scheduled for yesterday had to be scrubbed due to “ground system” issues. The launched was pushed by a day or two.

The most recent reminder of the difficulties getting this rocket into orbit came in June, when a pre-flight engine test ended in an explosion.

Even with all of the acrimony between Musk and President Trump, NASA and the White House are depending on the Starship rocket to make the Artemis program a reality.

Like him or not, the US space program’s success is locked in with Musk’s company at the moment.

We can only hope for a successful test.

Update: The launch was scheduled for late Monday, August 25th, but cancelled again, this time due to the weather.

The X37-B Mini-Shuttle Returns to Orbit

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Image (Credit): The X37-B space plane. (US Space Force)

While the space shuttles are all safely stored in space museums around the country, the U.S. Space Force’s X37B space plane (or uncrewed mini-shuttle) is still in business.

The spacecraft returned to Earth orbit late last week, launched from the Kennedy Space Center. The X-37B can stay in orbit for multiple years, powered by both batteries and solar cells. The latest launch is the eighth such mission.

While the missions are generally classified, they are thought to be basic experiments to enhance the U.S. Space Forces capabilities. For example, the latest mission is testing a quantum navigation sensor that can detect a spacecraft’s location without GPS. Of course, other have said the spacecraft are spying on the Chinese space station and Russian satellites. It is certainly possible that the little shuttle has been busy with all of this.

The two X-37Bs, called autonomous, reusable orbital test vehicles, were built by Boeing and started flying in 2010, one year before the end of the crewed space shuttles servicing the International Space Station (ISS).

It is odd that Boeing has done so well with this shuttle yet so poorly getting a manned capsule safely to and from the ISS, but maybe it has more to do with the skills of Rockwell International, which build the manned shuttles and was later acquired by Boeing.

Space Quote: Understanding NASA Interplanetary Transmissions and Applying it to SETI

Posted on by onespaceman2000
Image (Credit): Artist’s rending of the Perseverance Mars rover on the Martian surface. (NASA/JPL-Caltech)

”Based on data from the last 20 years, we found that if an extraterrestrial intelligence were in a location that could observe the alignment of Earth and Mars, there’s a 77% chance that they would be in the path of one of our transmissions — orders of magnitude more likely than being in a random position at a random time.”

–Statement by Penn State graduate student Pinchen Fan, one of the authors of a recent study, Detecting Extraterrestrial Civilizations that Employ an Earth-level Deep Space Network. The study looked at NASA transmissions from Earth to space missions in the the solar system to determine if it could assist with the search for extraterrestrial intelligence (SETI).

Study Findings: Core Metamorphism Controls the Dynamic Habitability of Mid-sized Ocean Worlds—The Case of Ceres

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Image (Credit): Dwarf planet Ceres. (NASA/JPL)

Science Advances abstract of the study findings:

Ceres’s surface mineralogy and density structure indicate an aqueous past. Observations from the Dawn mission revealed that Ceres likely hosted a global subsurface ocean in its early history, which was the site of pervasive aqueous alteration of accreted material. Subsurface environmental constraints inferred from Ceres’s surface mineralogy, combined with Ceres’s high abundance of carbon, suggest that the dwarf planet may have been habitable for microbial life. We present a coupled chemical and thermal evolution model tracking Ceres’s interior aqueous environment through time. If the rocky interior reached ≳550 K, then fluids released by rock metamorphism would have promoted conditions favorable for habitability by introducing redox disequilibrium into the ocean, a source of chemical energy for chemotrophs. We find that this period would have been between ~0.5 and 2 billion years after Ceres’s formation. Since then, Ceres’s ocean has likely become a cold, concentrated brine with fewer sources of energy, making it less likely to be habitable at present.

Citation: Samuel W. Courville, S.W., Castillo-Rogez J.C., Daswani, M.M. et al. Core metamorphism controls the dynamic habitability of mid-sized ocean worlds—The case of Ceres, Science Advances, Vol 11, Issue 34 (August 20, 2025).

https://doi.org/10.1126/sciadv.adt3283

Study-related stories:

The Register – “Dwarf Planet Ceres May Have Been Habitable – for Microbes – a Couple of Billion Years Back”

Perplexity – “Dwarf Planet Ceres May Have Harbored Ancient Microbial Life”

Astrobiology – “Ceres May Have Had Long-Standing Energy to Fuel Habitability”