The European Space Agency is Staying Busy with Sunshine

Posted on by onespaceman2000
Image (Credit): A radiance map of the sun’s south pole as recorded by the Solar Orbiter spacecraft. (ESA & NASA/Solar Orbiter/PHI Team, J. Hirzberger (MPS))

While NASA is going crazy over budget cuts, the European Space Agency (ESA) is focused on new images from the Solar Orbiter spacecraft showing the sun’s south pole from a distance of about 40 million miles (shown above).

Launched in February 2020, Solar Orbiter is an ESA-led cooperative mission with NASA designed to answer a number of questions:

  • What drives the Sun’s 11-year cycle of rising and subsiding magnetic activity?
  • What heats up the upper layer of its atmosphere, the corona, to millions of degrees Celsius?
  • How does solar wind form, and what accelerates it to speeds of hundreds of kilometres per second?
  • How does it all affect our planet?

Professor Carole Mundell, ESA’s Director of Science, stated:

Today we reveal humankind’s first-ever views of the Sun’s pole…The Sun is our nearest star, giver of life and potential disruptor of modern space and ground power systems, so it is imperative that we understand how it works and learn to predict its behaviour. These new unique views from our Solar Orbiter mission are the beginning of a new era of solar science.

We all need a diversion from the ongoing budget news, so it is good to read about ongoing science and a successful mission.

Pic of the Week: A Fun Evening Steven Colbert’s Guests

Posted on by onespaceman2000
Image (Credit): William Shatner and Neil deGrasse Tyson on The Late Show with Stephen Colbert. (CBS)

This week’s image comes from an episode of The Late Show with Stephen Colbert, which aired earlier this week. Mr. Colbert was interviewing William Shatner and Neil deGrasse Tyson about the absurdities on Earth and in the galaxy.

In an odd twist, Dr. Tyson was generally quiet on the sofa while Mr. Shatner carried the show with his antics. The image above shows one of the few times Dr. Tyson had a chance to explain a point. It is worth watching.

Shatner and Tyson will soon be on the road together with their own show. It is a live stage event on Wednesday, June 18, called ROCKING: The Universe is Absurd.

Space Stories: Spirals in the Oort Cloud, Killer Asteroid Heading Towards Moon, and Starlink Messes Up Astronomy

Posted on by onespaceman2000
Image (Credit): Halley’s Comet. (NASA Jet Propulsion Laboratory, California Institute of Technology)

Here are some recent space-related stories of interest.

—NDTV: “Visual Glitch Leads To Accidental Discovery Of Spiral In Mysterious Oort Cloud“

Scientists have long assumed the Oort Cloud, one of the most mysterious structures in our solar system, to be spherical. But during the pre-production of their new space show, “Encounters in the Milky Way,” they noticed a strange spiral pattern in the middle of the cloud. The show, which premiered on Monday at New York City’s Hayden Planetarium, featured a computer-generated visualisation of the Oort Cloud on the dome. The team was reviewing the animation when they noticed what appeared to be a spiral structure inside the typically spherical cloud shape.

—Daily Mail: “NASA Issues Urgent Update on ‘City Killer’ Asteroid Heading Towards the Moon in 2032“

The ‘city killer’ asteroid 2024 YR4 may not be on a collision course with Earth anymore. But NASA has raised the odds of it hitting the moon in just seven years’ time. According to the space agency, there’s now a 4.3 per cent chance that 2024 YR4 will smash into the moon on December 22, 2032…The impact event would be the first time scientists could watch a known asteroid create a lunar crater in real-time.

—New Scientist: “Starlink Satellites are Leaking Radio Signals that May Ruin Astronomy“

SpaceX’s Starlink satellites are leaking radio waves to such an extent that it could threaten our ability to study and understand the early universe, say astronomers. Interference from the thousands of Starlink satellites in orbit, where they provide a global internet service, has been a continuing concern for astronomers, who say that the radio emissions from the craft could affect sensitive telescopes that observe distant, and faint, radio sources. SpaceX has worked with astronomers to try to prevent this interference, by switching off their internet-transmitting beams when they fly over key telescopes, but it turns out that this isn’t enough.

Video: The Dark Forest

Posted on by onespaceman2000
Credit: Image by Yol Gezer from Pixabay.

And now for something really different. If you are tired of national politics, maybe its time to talk about the extinction of all life in our solar system. Just for a change of topic, of course.

The Cool Worlds Lab has an interesting video titled “Why I Don’t Buy The Dark Forest Hypothesis” that picks apart this idea that technologically advanced species throughout the galaxy are hiding from one another out of the fear that once detected they may be destroyed. You may remember the term Dark Forest from a book of the same title by Chinese writer Liu Cixin.

Its a good discussion of the hypothesis, with plenty of diagrams mapping out a civilization’s decision to either reply to, ignore, or attack a newly discovered civilization trying to communicate.

I don’t want to spoil everything, but the bottom line is that it is probably too late for us to worry about this anyway. First, we have already sent out plenty of electronic messages as well as messages intended for alien civilizations. But more importantly, the James Webb Space Telescope is showing us that a silent civilization on a distant exoplanet can still be detected as we investigate that exoplanet’s atmosphere. So if a dangerous distant civilizations was seeking out other planets with life that it could destroy, the Earth has been telegraphing life for more than 3.5 billion years.

Check it out and learn more about the hypothesis and the arguments for and against it.

Star Wars: Another Political Take on the Empire

Posted on by onespaceman2000
Image(Credit): Senator Amidala from Star Wars: Revenge of the Sith. (Starwars.com)

While the libertarians at Reason magazine have their view of the imperial story-line in the Star Wars television series Andor, the liberal folks at Mother Jones magazine have a whole different take on the Star Wars universe.

In an article last month titled “How Star Wars Reveals Conservatives’ Authoritarian Fantasies,” we read about how some Republicans are showing support for the brutality of the Dark Side as illustrated in Andor. For instance, it quotes former Mitch McConnell adviser and GOP operative Scott Jennings defending the Empire’s elimination of Alderaan in the original Star Wars movie, stating:

I think some could argue that it was warranted, given their rebellious activities. I mean, he defended the Empire against unelected hippies and violent protesters.

You can see the entire Mother Jone’s YouTube clip here.

This is not an encouraging thought at this point in history. In an interview, George Lucas himself said the rebel alliance came from his reading of history and his understanding of the Viet Cong battle against the American empire. He saw the rebels as anti-authoritarian. He also thought of the American rebels as they fought Great Britain, the largest empire in the world.

Supporting the Evil Empire is more or less the same as voicing support for the wannabee Russian empire as it attacks democratic Ukraine. I think we all can do much better than to stoop that low.

Either that, or soon we will also be quoting the line “So this is how liberty dies.”