The Nancy Grace Roman Space Telescope Has Launched

Posted on by onespaceman2000
Image (Credit): NASA’s Nancy Grace Roman Telescope aboard a SpaceX rocket transiting the sun during launch from Launch Complex 39A at NASA’s Kennedy Space Center in Florida earlier today. (NASA/John Kraus)

Earlier today, NASA’s Nancy Grace Roman Space Telescope was successfully launched from Florida’ Kennedy Space Center. It is now on a journey toward the second Sun-Earth Lagrange point, or L2, about 1 million miles from Earth where it will start its mission.

The Roman Space Telescope will have a field of view at least 100 times larger than Hubble’s, which it can use to view billions of galaxies as well as answer questions about exoplanets, dark energy, dark matter, and more.

Nicky Fox, associate administrator for the Science Mission Directorate at NASA Headquarters in Washington, stated:

Roman will be a discovery machine that will bring us closer than ever before to answering humanity’s most profound questions about our cosmic history…With its large field of view and fast survey speeds, Roman will usher us into a new era of discovery and make the invisible visible, setting the foundation for humanity’s search for life beyond our solar system.

Not a bad mission for a repurposed spy satellite donated to NASA back in 2012. I wonder if the National Reconnaissance Office has any other old satellites or spacecraft lying around that it might want to put to use discovering more about the universe.

It’s a promising way to turn swords into plowshares.

WiCOR Discovers a Mega-Earth

Posted on by onespaceman2000
Credit: WiCOR.

The Wisconsin Center for Origins Research (WiCOR) at the University of Wisconsin has two questions as part of its mission:

  • How do habitable planets form?
  • How does life emerge on habitable planets?

And now, the center has discovered its first exoplanet that brings up an unexpected question – Why is the newly discovered exoplanet GJ 523b a Mega-Earth rather than a gas giant like Saturn or Jupiter?

This new exoplanet, located about 87 light-years away, is 2.5 times the size of our Earth and 23 times its mass. To date, it was understood that something this large would become the core of a gas giant and not just a rocky planet like Earth. So what is the story here?

The results will appear shortly in a new paper, which will include some theories as to how this happened. You can read more about the discovery and at least one theory at the WiCOR site now.

Podcast: Jupiters Around Other Suns

Posted on by onespaceman2000

NASA’s Curious Universe podcast has a special series on the Nancy Grace Roman Space Telescope. Titled “Roman Series: Jupiters Around Other Suns,” it is the second episode in the podcast’s 13th season. The first episode in this series is titled “Roman Series: NASA’s New View of the Dark Universe.”

This second episode discusses the Roman Space Telescope’s upcoming search for exoplanets, noting that space telescope is expected to discover as many as 100,000 new exoplanets within 26,000 light years from Earth. More importantly, it should be able to detect Earth-like exoplanets that have been very difficult to detect up to this point.

In the episode, Vanessa Bailey, a scientist with NASA’s Jet Propulsion Laboratory, states:

I’m quite excited, because the Nancy Grace Roman mission, one of the two cameras on board the Wide Field instrument, will use the microlensing method to get the most complete census to date of smaller planets orbiting at distances more like Earth, Mars, Jupiter, a real part of parameter space we’ve never been able to access before, and that’s what’s going to tell us, is our solar system common or rare, at least go a long way to answering that question.

The Roman Space Telescope will also analyze the light smudges represented by an exoplanet so it can learn more about the nature of that world. These smudges represent reflected light from the host sun, but it help us to identify the contents of the exoplanet’s atmosphere. And getting that smudge is a lot of work, which is described in detail in the podcast.

The podcast also discusses the Habitable Worlds Observatory (HWO), a future mission to discover even more about the atmospheres of exoplanets.

The efforts of the Roman Space Telescope should help to pave the way for the HWO and more amazing missions after that.

Space Stories: A New Wind Tunnel, Names in Deep Space, and the First Exomoon Detected

Posted on by onespaceman2000
Image (Credit): On July 31, 2026, NASA officials and others pose for a photo before cutting the ribbon to open the Flight Dynamics Research Facility at NASA’s Langley Research Center in Hampton, Virginia. (NASA/Keegan Barber)

Here are some recent space-related stories of interest.

—WTOP News: “NASA Opens its First Wind Tunnel in 40 Years at Langley Research Center“

Friday was a historic day for NASA’s Langley Research Center in Hampton, Virginia. A stellar lineup of VIPs from NASA, GSA, Congress, Virginia and Langley employees celebrated the ribbon-cutting ceremony for NASA’s newest and most advanced wind tunnel: the Flight Dynamics Research Facility. The $53 million, 25,000-square-foot FDRF, built by BL Harbert International, is the first wind tunnel added to NASA’s wind tunnel assets in 40 years. The project was started in June 2022, with construction completed in March 2026.

—NASA: “NASA’s Roman Telescope to Carry 1.35 Million Names to Deep Space“

On July 27, technicians at NASA’s Kennedy Space Center in Florida installed a memory card containing 1,350,144 names as part of a commemorative plaque on the Nancy Grace Roman Space Telescope. The names were submitted by people globally, including astronauts from Artemis II and Artemis III. The memory card will travel with the Roman observatory to the Sun-Earth Lagrange point 2, or L2, about one million miles from Earth, where the Sun’s and Earth’s gravity balance out.

—Wired: “Astronomers Have Detected an Exomoon for the First Time“

An international research team has discovered evidence of a moonlike body. It marks the first time such an object has been detected outside our solar system—though just how close it comes to being a moon is a question researchers are still grappling with. Although more than 6,000 exoplanets have been discovered to date, there’s been a lack of definitive evidence of moons in other planetary systems. The new findings challenge that by focusing on an object orbiting the brown dwarf CD-35 2722 B in a system 73 light-years away.

Note: Here is the podcast version of this post.

Study Findings: The Barnard’s Star Planetary System: Stability, Composition, and Evolution of Four Sub-Earth Exoplanets

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Credit: NASA Photojournal

Monthly Notices of the Royal Astronomical Society abstract of study findings:

Barnard’s Star is the nearest single star to the Sun (1.8 pc⁠⁠), and hosts four recently discovered planets. The star also has well-characterized stellar abundances of important rock-forming elements, including Fe, Mg, and Si. For refractory elements like these, the planets have likely inherited similar bulk elemental abundance ratios to the star, facilitating modelling of their interior structures. We present here an analysis of the Barnard’s Star planetary system on several fronts. We perform a detailed stability analysis of the system, ascertaining that all four planets likely have masses between 0.19 and 0.84 M⁠, and are likely tidally locked, whereas a 4:3 mean-motion resonance chain for the inner three planets cannot be ruled out. Using atmospheric evolution models, we show that the prospect of extant primary atmospheres is highly unlikely on any of the planets. Barnard’s Star’s abnormally high Mg/Si ratio and low Th/Mg ratio imply planetary mantles which (a) are rich in (Mg,Fe)O ferropericlase; (b) have less than half the water capacity as Earth; (c) generate about half of the radiogenic heating as Earth; and (d) are cool and unlikely to have outgassed secondary atmospheres. Our analysis of this system presents an accessible set of first steps for the study of other nearby exoplanetary systems, as well as sub-Earth planets which will be increasingly discovered over the coming years.

Citation: Byrne, X., Guimond, C.M., Bonsor, A., et al. The Barnard’s Star planetary system: stability, composition, and evolution of four sub-Earth exoplanet. Monthly Notices of the Royal Astronomical Society, Volume 550, Issue 2 (2026).

DOI: https://doi.org/10.1093/mnras/stag1207

Study-related stories:

University of Cambridge – “Astronomers Find Nearby Planets To Be Small, Strange, and Utterly Uninhabitable”

Sci.News – “Barnard’s Star Planetary System May Be Filled with Water-Poor Rocky Worlds”

Daily Galaxy – “Scientists Studied a Nearby Star and Found Four Planets That Look Nothing Like Earth”