Video: Cool Worlds and the Fermi Paradox

Posted on by onespaceman2000

A recent video from the YouTube channel Cool Worlds titled “The Fermi Paradox Has An Incredibly Simple Solution” is a fun review of the Fermi Paradox, which asks “Where are they?” in reference to alien visitors. The video goes into the meaning of the question as well as possible interpretations of the paradox itself.

Professor David Kipping from the Department of Astronomy at Columbia University does a nice job of explaining some of the “answers” to the so-called paradox, and even introduces one of his own called the “Weak Anthropic Principle.” I do not want to spoil the story, so I recommend you view the short video on your own. It is enlightening.

The scariest bit of the presentation involves “self-replicating universal constructors” that could colonize the galaxy with present-day rocket technology. Moreover, such constructors may be in development by businesses today with programs such as ChatGPT, as warned by many parties today. Under this scenario, the colonization of our galaxy would start in a Microsoft or Google lab, with humans playing no part in that eventual future because we will not be needed.

Sweet dreams as you ponder that.

Check out the Cool Worlds YouTube page for other fascinating videos.

Note: The creators of the YouTube channel Cool Worlds is also planning a podcast in the near future. That should be a nice addition to the group’s educational material.

Pic of the Week: Solar Eclipse from a Ship

Posted on by onespaceman2000
Image (Credit): Solar Eclipse from a Ship. (APOD/Fred Espenak)

This week’s image is from NASA’s Astronomy Picture of the Day (APOD). Here is the full story of the solar eclipse from the NASA site:

Along a narrow path that mostly avoided landfall, the shadow of the New Moon raced across planet Earth’s southern hemisphere on April 20 to create a rare annular-total or hybrid solar eclipse. From the Indian Ocean off the coast of western Australia, ship-borne eclipse chasers were able to witness 62 seconds of totality though while anchored near the centerline of the total eclipse track. This ship-borne image of the eclipse captures the active Sun’s magnificent outer atmosphere or solar corona streaming into space. A composite of 11 exposures ranging from 1/2000 to 1/2 second, it records an extended range of brightness to follow details of the corona not quite visible to the eye during the total eclipse phase. Of course eclipses tend to come in pairs. On May 5, the next Full Moon will just miss the dark inner part of Earth’s shadow in a penumbral lunar eclipse.

Space Stories: Russia Sticks with ISS, Czechs Join Artemis Accords, and China Plans for Sample Return from Far Side of Moon

Posted on by onespaceman2000
Image (Credit): The International Space Station. (Roscosmos)

Here are some recent stories of interest.

—Phys.org: “Russia Will Use International Space Station ‘Until 2028’”

Russia said Wednesday it planned to use the International Space Station until 2028, an apparent reversal of an earlier announcement to quit the orbiting laboratory after 2024. On Wednesday, the head of Russian space agency Roscosmos, Yuri Borisov, said Moscow’s participation in the international space project had been extended. “By the decision of the government, the operation of the International Space Station has been extended until 2028,” Borisov told President Vladimir Putin during a televised meeting, referring to the Russian segment.

—SpaceNews.com: “Czech Republic signs Artemis Accords”

The Czech Republic became the 24th country to sign the Artemis Accords May 3, growing Europe’s presence in the U.S.-led agreement. In a brief ceremony at NASA Headquarters, Jan Lipavský, minister of foreign affairs for the Czech Republic, formally signed the accords in the presence of officials from NASA and the U.S. State Department. Representatives of several other countries who previously signed the Artemis Accords also attended…Neither U.S. nor Czech officials announced specific plans to cooperate on the Artemis lunar exploration campaign as a result of signing the accords, but suggested the signing opened the door for future discussions. 

—Space.com: “China to Launch 1st-ever Sample Return Mission to Moon’s Far Side in 2024”

China will attempt to collect the first samples from the far side of the moon next year with its Chang’e 6 mission. The complex, four-spacecraft mission will launch on a Long March 5 rocket from Wenchang in May 2024, according to Wu Yanhua, chief designer of China’s Deep Space Exploration Major Project, speaking at a deep-space exploration conference on April 25 in the Chinese city of Hefei.

Evening Skies: First Satellites, and Now Wind Turbines

Posted on by onespaceman2000
Credit: Grist.org

Earth-bound astronomers have another force to contend with these days – wind turbines. Yes, the efforts to reduce carbon emissions is increase light emissions around the globe. Why can’t anything be easy?

The Wall Street Journal recently noted that the lights added to wind turbines to make them visible to airplanes is causing light pollution for local residents and astronomers alike. In the article, “Lawmakers Crack Down on Wind-Turbine Lights That Flash All Night,” we learn that a simple fix may save the night sky. Lawmakers in some states are requiring that the warning lights remain off until an aircraft approaches.

Of course, this is a costly solution to the wind turbine operators or they would have done it already. The article states:

Aircraft-detection technology approved by the Federal Aviation Administration has been on the market for a half-dozen years. The systems are estimated to cost $1 million to $2 million to install with additional operating expenses each year. 

That said, it seems to be a fair compromise to allow local citizens to enjoy their evenings. I am not sure if anyone is planning to require the same from cell towers and other commercial structures, but it’s a start.