A Day in Astronomy: Galileo Warned Away from Heliocentrism

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Image (Credit): Portrait of Galileo by Robusti. (Royal Museum Greenwich)

On this day in 1616, on behalf of Pope Paul V, Cardinal Bellarmine ordered Galileo Galilei to abandon his position on the Earth moving around the Sun. The same year saw the banning of Nicholas Copernicus’ book On the Revolutions of the Celestial Spheres, which also theorized a heliocentric system. All of this was still 17 years before the formal sentencing of Galileo leading to his house arrest for the rest of his life.

It wasn’t until 1992, following an investigation initiated by Pope John Paul II, that the Catholic Church acknowledged its unfair persecution of Galileo. As The New York Times noted on October 31, 1992:

With a formal statement at the Pontifical Academy of Sciences on Saturday, Vatican officials said the Pope will formally close a 13-year investigation into the Church’s condemnation of Galileo in 1633. The condemnation, which forced the astronomer and physicist to recant his discoveries, led to Galileo’s house arrest for eight years before his death in 1642 at the age of 77.

And to think we complain about the slow pace of government decisions in modern times.

Space Stories: Distant Metalic Mining, Mapping Water on the Moon, and Lunar Cell Phone Service

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Image (Credit): Artist’s rendering of the Odin spacecraft approaching an asteroid. (Astroforge)

Here are some recent stories of interest related to the upcoming Intuitive Machines’ launch to the Moon.

—CNN: “A Tiny Spacecraft is Poised to Launch on an Unprecedented Deep-space Mission. The CEO Behind it is ‘Terrified’“

His venture may seem far out, but asteroid mining CEO Matt Gialich has no illusions. The engineer cofounded the bold California startup AstroForge in 2022 with the aim of hunting for precious metals in space, and he is all too aware that success is not guaranteed…The probe is set to lift off aboard a SpaceX Falcon 9 rocket from NASA’s Kennedy Space Center in Florida on February 26. AstroForge’s spacecraft will ride alongside Athena, a lunar lander developed by the startup Intuitive Machines, until it breaks off on its own.

—Caltech: “NASA’s Lunar Trailblazer is Launching to the Moon’“

NASA’s Lunar Trailblazer mission is led by Caltech’s Bethany Ehlmann, professor of planetary science and the Allen V. C. Davis and Lenabelle Davis Leadership Chair and director of the Keck Institute for Space Studies, and the mission is operated by IPAC at Caltech. The Lunar Trailblazer small satellite, or smallsat, will orbit the Moon to understand the nature of water on the Moon’s surface, providing maps to guide future robotic and human explorers. Prior missions have seen hints of ice and other forms of water that could be used in a variety of ways, from purifying it for human use, to processing it for fuel and breathable oxygen for future human Moon landings.

—Fox News: “NASA Will Test Cell Phone Service on the Moon in Latest Mission’“

NASA and Intuitive Machines are gearing up for a Wednesday evening liftoff, and one of the payloads will test a moon-based cell network. Researchers with Nokia Bell Labs Solutions Research developed the network and say it’s the same tool that we use here on Earth when we pick up our phones and make a call. But they had to make a cell tower much smaller so it could fit in a rocket and land on the moon.

Podcast: The Future of Human Mars Exploration

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The Mars Society’s Red Planet Live Podcast will be joined by Dr. Robert Zubrin on March 4th for a discussion about the future of human Mars exploration, what it will take to get boots on the Red Planet, and how we can build our first off-world settlement.

Dr. Zubrin is the Founder and President of The Mars Society, as well as the author of numerous books on Mars and other space-related topics. One of his latest books is The New World on Mars: What We Can Create on the Red Planet, which was issued in February 2024. As short summary of the book from the publisher’s site is provided below. It should be a useful primer for the upcoming discussion.

SpaceX, Blue Origin, and Virgin Galactic are building fleets of space vehicles to make interplanetary travel as affordable as Old-World passage to America. We will settle on Mars, and with our knowledge of the planet, analyzed in depth by Dr. Zubrin, we will utilize the resources and tackle the challenges that await us. What we will we build? Populous Martian city-states producing air, water, food, power, and more. Zubrin’s Martian economy will pay for necessary imports and generate income from varied enterprises, such as real estate sales—homes that are airtight and protect against cosmic space radiation, with fish-farm aquariums positioned overhead, letting in sunlight and blocking cosmic rays while providing fascinating views. Zubrin even predicts the Red Planet customs, social relations, and government—of the people, by the people, for the people, with inalienable individual rights—that will overcome traditional forms of oppression to draw Earth immigrants. After all, Mars needs talent.

You can find the list of past Red Planet podcast episodes on YouTube.

Credit: Diversion Books.

Space Quote: More on the ISS “Stranded” Story

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Image (Credit): European Space Agency astronaut Andreas Mogensen (Twitter/X)

“You know as well as I do, that Butch and Suni are returning with Crew-9, as has been the plan since last September. Even now, you are not sending up a rescue ship to bring them home. They are returning on the Dragon capsule that has been on ISS since last September.”

–Comments by Andreas Mogensen, a Danish astronaut who commanded the ISS between September 2023 to early 2024, in response to Elon Musk’s constant tweets about his efforts to “rescue” the two Starliner astronauts on the International Space Station (ISS). NASA already resolved the issue, yet Mr. Musk seems to need the attention given that otherwise the media keeps ignoring his actions (such as harassing federal employees, including those at NASA).

China is Building Its Own James Webb Space Telescope

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Image (Credit): Artist’s rendering of the China Space Station Telescope called Xuntian. (Changchun Institute of Optics, Fine Mechanics and Physics)

Just as we have competition with China for the next human to visit the Moon, we now have competition for the James Webb Space Telescope (JWST).

China has stated it plans to launch the China Space Station Telescope (CSST) in 2026, which should be as powerful as the JWST while having the extra benefit of remaining in Earth orbit. As a result, when compared to the JWST, the CSST will be easier to maintain as well as upgrade.

A Chinese paper on the new telescope noted the following regarding its potential:

It can simultaneously perform multi-band imaging and slitless spectroscopic wide- and deep-field surveys in ten years and an ultra-deep field (UDF) survey in two years, which are suitable for cosmological studies. Here we review several CSST cosmological probes, such as weak gravitational lensing, two-dimensional (2D) and three-dimensional (3D) galaxy clustering, galaxy cluster abundance, cosmic void, Type Ia supernovae (SNe Ia), and baryonic acoustic oscillations (BAO), and explore their capabilities and prospects in discovering new physics and opportunities in cosmology. We find that CSST will measure the matter distribution from small to large scales and the expansion history of the Universe with extremely high accuracy, which can provide percent-level stringent constraints on the property of dark energy and dark matter and precisely test the theories of gravity.

Of course, there is nothing wrong with a little competition. Let’s just hope NASA can get back on track after its latest budget problems as well as its current unstructured reorganization under the new White House. While the agency has other powerful telescopes under development, it doesn’t take much to throw things out of balance.