NASA has shared the first images from the James Webb Space Telescope (JWST), which includes the selfie of the 18-part mirror shown above. The space telescope is still aligning these mirror segments before prime time, so we will probably see more selfies and related shots for the time being, such as the images below (one labeled) showing the 18 segment views of one star that will eventually become one view of one star.
Keep these raw images in mind once we start to see mind-blowing images from the JWST. This amazing device is just getting started. The first of these images should start to appear this summer.
Source/Credit:The Joe Rogan Experience on YouTube.
While Joe Rogan has been in some hot water recently, I think we can agree that many of his broadcasts were less controversial and simply fun. He is a good host with plenty of though-provoking questions. I do not want to get into politics, but rather focus on science. And in that case, his two-and-a-half hour discussion on January 28, 2019 with Professor Brian Cox, English physicist and Professor of Particle Physics in the School of Physics and Astronomy at the University of Manchester in the UK, was a terrific way to go over both astronomy and physics.
Some of the topics covered during their talk included the size and complexity of the universe, black holes, wormholes, time travel, the Fermi Paradox, unknown objects at the edge of our solar system, space travel, lasers in space, and the role of artificial intelligence in society. The forum provided plenty of time to cover a large range of topics. It is well worth dropping in and listening.
Some other discussions worth watching include Joe Rogan’s August 22, 2018 discussion with Neil deGrasse Tyson and his May 7, 2020 discussion with Elon Musk.
Netflix’s new series from South Korea, The Silent Sea, was released right before Christmas and did not get a lot of attention. It may not deserve a lot of attention, and would have probably been better as a short film (which is how it started) rather than an 8-part series, but it was passable as entertainment.
The year is 2075 and Earth has become a dust bowl where water is rationed and civilization is dying. We seem to have the ability to maintain manned stations on the Moon and Mars, but water conservation is beyond our abilities. It seems we did not have a Planet B ready to go. With this background, the series is about a special team sent back to the Moon to visit a failed station and retrieve critical scientific samples. I will not give you too many hints, but it relates back to the water shortage on Earth.
The trip to the Moon seemed more like a Southwest flight than a space mission, and the Moon base itself is a ridiculously gigantic facility at the edge of a chasm, yet the action mainly takes place within the Moon base at a good pace. Throughout the series there are mysterious deaths, unknown figures running around the station, and corporate espionage, so it does not lack a fair amount of drama. Sadly, the last episode unravels quickly with a somewhat dumb (and certainly unbelievable) ending.
I cannot recommend it after seeing much better series, such as The Expanse and National Geographic’s Mars. However, if you need to satisfy your science fiction fix before other space series are available, give it a try. You have been warned.
Source/Credit: Scene from The Silent Sea from Netflix.
Source/Credit: Satellite imagery showing the military buildup in Yelnya, Russia as of November 1, 2021 fromMaxar Technologies/Getty Images.
Politico reported this week that Russia has asked that next week’s discussion at the United Nations (U.N.) about arms in space be delayed. It is possible the Russians are busy preparing for war in Ukraine and have little time to look up. But it should be possible to resolve matters here on the surface and in space.
The U.N. Committee on Disarmament established a working group after seeking member input on the “…development and implementation of norms, rules and principles of responsible behaviours and on the reduction of the risks of misunderstanding and miscalculations with respect to outer space.” Sounds like a good idea to me. You can find the report with the members’ input here.
Here is part of what the United States submitted in its response to the U.N. query:
Some States are developing, operationalizing, and stockpiling a variety of [anti-satellite] weapons that could be used to, or have the potential to, deny, disrupt, degrade, or destroy civil, commercial, ornational security space capabilities and services. Some of these anti-satellite weapons could be used to deny or disrupt space services temporarily, while others are designed to permanently degrade or destroy satellites.
These threats against satellites and their supporting systems can generally be divided into four categories: 1) ground-space; 2) space-space; 3) ground-ground; and 4) space-ground. Within these categories, the threats can be described as 1) reversible, which include temporary effects such as interference with radiofrequency signals or dazzling of remote sensing systems, or 2) irreversible, which include measures that degrade or destroy a satellite. The consequences of all categories of threats could include loss of mission data; decreased lifespan or capability of space systems or constellations; the loss of positive control of space vehicles, potentially resulting in collisions that could impair systems or generate harmful orbital debris; or damage to or destruction of the space system.
The working group should have plenty to discuss if it can get everyone together. Let’s hope the Ukrainian matter can be resolved peacefully to allow work to start on a stable peace in space as well.
Note: The dates on the article and U.N. schedule do not align, but the main point about the Russians being too busy to worry about a space war remains the same.
Source/Credit: Chinese Shijian-21satellite fromAsia Times.
Phys.org reported the success of a Chinese mission to retrieve a dead satellite, a hopeful sign given the increasing number of satellites and related debris in orbit. The story, “A Chinese space tug just grappled a dead satellite,” discusses how the Chinese spacecraft, Shijian-21, retrieved a dead navigation satellite belonging to the Chinese CompassG2 network. The story also included a video from ExoAnalytic Solutions demonstrating the retrieval and eventual release of the CompassG2 satellite into a graveyard orbit.
Of course, every pro comes with a con. Is this just a maintenance spacecraft or could it be part of a future offensive strategy to take other non-Chinese satellites out of orbit? The media in India were skeptical, as you can see from this headline: “China Preparing for War in Space?” Not that China is alone should it be looking for an anti-satellite spacecraft. Other countries, including the US, have similar dual-use spacecraft.
According to the Phys.org article, the Chinese have been silent, so the whole operation is somewhat opaque. Given the various attempts by other nations to solve the debris problem, it benefits each nation to share information on debris mitigation efforts so everyone can learn from them. Greater transparency from China would be nice.
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