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From Space Force to Artemis: what Joe Biden presidency may mean in orbit and beyond – The Conversation US

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Donald Trump set bold goals for space exploration during his time in office – from crewed missions to the Moon and Mars to a Space Force. By contrast, his successor Joe Biden has been relatively quiet on space policy. So how is space exploration likely to change going forward?

It is clear is that there will be change. NASA’s current chief, Jim Bridenstine, has already announced he is stepping down. And we know that US human spaceflight policy rarely survives a change in presidency.

That said, the amazing success of the crewed SpaceX launch to the International Space Station (ISS), however, means the commercial crew programme is likely to keep running – taking the burden off NASA. Indeed, the first operational flight of the Crew Dragon by commercial company SpaceX is due for launch on November 14, with four astronauts bound for the ISS.

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During the Trump administration, NASA also committed to the return of astronauts to the Moon in 2024 under the Artemis program. This is due for its first test launch (uncrewed) next year with Artemis-1. This builds on the Constellation program which was implemented by Republican president George W Bush in 2005 but was subsequently cancelled by Democratic president Barack Obama due to its high cost and difficulty.

Artist’s concept of Artemis-1.
NASA

The only substantial clue as to the direction of a Biden presidency with regard to astronaut flights to the Moon can be found in a document by the Democratic Party entitled “Building a Stronger, Fairer Economy”. In one paragraph, the Democrats state that they “support NASA’s work to return Americans to the Moon and go beyond to Mars, taking the next step in exploring our solar system.”

No detail is offered on possible timelines. But, with international cooperation now a major feature of the Artemis program, it would be difficult for a fledgling Biden administration to unilaterally withdraw from the project. For example, Canada, the European Space Agency and Japan are all formal partners in the construction of the Lunar Gateway – a lunar orbiting outpost designed to support multiple expeditions to the surface.

The programme is also rapidly advancing research, particularly in terms of building materials, power supplies and food production. Just this week, the European Space Agency awarded a contract to the British company Metalysis to develop techniques to simultaneously extract oxygen and metals from lunar soil.

The Trump administration also pushed for a first crewed mission to Mars in the 2030s – a much more difficult task due to the distances involved. The long journey would put astronauts at risk of high radiation exposure and psychological difficulties. Other huge challenges include weight restrictions and communication times.

An independent report by the Science and Technology Policy Institute in 2019 stated that a crewed Mars mission in the 2030s is currently infeasible. It is unlikely Biden will try to resurrect this any time soon.

One of the more questionable implementations by the Trump administration was the formation of Space Force – a branch of the armed forced in space. The move highlights that the US views space as a potential war zone rather than a domain of purely scientific venture. But US citizens aren’t too impressed with the Space Force, mocking the logo and the uniforms. Indeed, the programme has public approval rating of only 31%.

So will it be scrapped? The disbanding of a branch of the armed forces has not been performed in the US before and there are doubtlessly many difficulties of reintegrating this back into the US Air Force. It is therefore likely to stay, possibly with reduced focus.

A fresh start for NASA?

Can we expect anything new? Biden has already pledged to sign executive orders that will undo most of the Trump administration’s work – in the same way that Trump undid most of Obama’s work.

The biggest indication of change is Bridenstine stepping down. When he was appointed in 2018, it was something of a surprise to the scientific community – he had no scientific qualifications and had previously indicated that he had doubts about climate change (which he changed his mind about when accepting the role). Yet he has proved to be an able leader of NASA.

On stepping down, he said he wanted to let somebody with a “close relationship with the president” take over. Who this might be is still a question, and will depend largely on the new president himself. Most heads of NASA have at least a degree in engineering or physics and, in the past, have headed a space centre. This makes Jody Singer (the director of Marshall Space Flight Center), Mark Geyer (the director of Johnson Space Center), or Dennis Andrucyk (the director of Goddard Space Flight Center) potential candidates, as well as the current deputy administrator James Morhard. The field is thought to be largely open, though.

Image of Joe Biden.
Biden wants to tackle climate change.
Gage Skidmore/Flickr, CC BY-SA

Biden has made it clear that tackling the climate emergency is a priority. While this is likely to be focused on industrial pollution limits and renewable energy sources, it does suggest that space policy could be more focused on Earth observation missions, such as the GOES (Geostationary Operational Environmental Satellite) programme.

Potentially we could be looking at more satellites of this type; monitoring oil spills, deforestation and carbon emissions. All of these possibilities are of course overshadowed by the financial crisis caused by the COVID-19 pandemic. And, given that a sustained source of money to support long-term projects such as the Artemis program is vital to their success, it is probably a case of believing it when we see it.

Whatever the changes will be, it seems likely that there may be less funding for space missions. But, despite that, many scientists will be breathing a sigh of relief at the prospect of not having to fight the kind of anti-science tweets that we have seen from Trump during his time in office on topics ranging from Covid-19 and vaccinations to climate change.

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NASA to launch sounding rockets into moon's shadow during solar eclipse – Phys.org

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This photo shows the three APEP sounding rockets and the support team after successful assembly. The team lead, Aroh Barjatya, is at the top center, standing next to the guardrails on the second floor. Credit: NASA/Berit Bland

NASA will launch three sounding rockets during the total solar eclipse on April 8, 2024, to study how Earth’s upper atmosphere is affected when sunlight momentarily dims over a portion of the planet.

The Atmospheric Perturbations around Eclipse Path (APEP) sounding rockets will launch from NASA’s Wallops Flight Facility in Virginia to study the disturbances in the created when the moon eclipses the sun. The sounding rockets had been previously launched and successfully recovered from White Sands Test Facility in New Mexico, during the October 2023 .

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They have been refurbished with new instrumentation and will be relaunched in April 2024. The mission is led by Aroh Barjatya, a professor of engineering physics at Embry-Riddle Aeronautical University in Florida, where he directs the Space and Atmospheric Instrumentation Lab.

The sounding rockets will launch at three different times: 45 minutes before, during, and 45 minutes after the peak local eclipse. These intervals are important to collect data on how the sun’s sudden disappearance affects the ionosphere, creating disturbances that have the potential to interfere with our communications.

The ionosphere is a region of Earth’s atmosphere that is between 55 to 310 miles (90 to 500 kilometers) above the ground. “It’s an electrified region that reflects and refracts and also impacts as the signals pass through,” said Barjatya. “Understanding the ionosphere and developing models to help us predict disturbances is crucial to making sure our increasingly communication-dependent world operates smoothly.”

A sounding rocket is able to carry science instruments between 30 and 300 miles above Earth’s surface. These altitudes are typically too high for science balloons and too low for satellites to access safely, making sounding rockets the only platforms that can carry out direct measurements in these regions. Credit: NASA’s Goddard Space Flight Center

The ionosphere forms the boundary between Earth’s lower atmosphere—where we live and breathe—and the vacuum of space. It is made up of a sea of particles that become ionized, or electrically charged, from the sun’s energy or .

When night falls, the ionosphere thins out as previously ionized particles relax and recombine back into neutral particles. However, Earth’s terrestrial weather and space weather can impact these particles, making it a dynamic region and difficult to know what the ionosphere will be like at a given time.

It’s often difficult to study short-term changes in the ionosphere during an eclipse with satellites because they may not be at the right place or time to cross the eclipse path. Since the exact date and times of the are known, NASA can launch targeted sounding rockets to study the effects of the eclipse at the right time and at all altitudes of the ionosphere.

As the eclipse shadow races through the atmosphere, it creates a rapid, localized sunset that triggers large-scale atmospheric waves and small-scale disturbances or perturbations. These perturbations affect different radio communication frequencies. Gathering the data on these perturbations will help scientists validate and improve current models that help predict potential disturbances to our communications, especially high-frequency communication.

This conceptual animation is an example of what observers might expect to see during a total solar eclipse, like the one happening over the United States on April 8, 2024. Credit: NASA’s Scientific Visualization Studio

The APEP rockets are expected to reach a maximum altitude of 260 miles (420 kilometers). Each rocket will measure charged and neutral particle density and surrounding electric and magnetic fields. “Each rocket will eject four secondary instruments the size of a two-liter soda bottle that also measure the same data points, so it’s similar to results from fifteen rockets while only launching three,” explained Barjatya. Embry-Riddle built three secondary instruments on each rocket, and the fourth one was built at Dartmouth College in New Hampshire.

In addition to the rockets, several teams across the U.S. will also be taking measurements of the ionosphere by various means. A team of students from Embry-Riddle will deploy a series of high-altitude balloons. Co-investigators from the Massachusetts Institute of Technology’s Haystack Observatory in Massachusetts and the Air Force Research Laboratory in New Mexico will operate a variety of ground-based radars taking measurements.

Using this data, a team of scientists from Embry-Riddle and Johns Hopkins University Applied Physics Laboratory are refining existing models. Together, these various investigations will help provide the puzzle pieces needed to see the bigger picture of ionospheric dynamics.

The animation depicts the waves created by ionized particles during the 2017 total solar eclipse. Credit: MIT Haystack Observatory/Shun-rong Zhang. Zhang, S.-R., Erickson, P. J., Goncharenko, L. P., Coster, A. J., Rideout, W. & Vierinen, J. (2017). Ionospheric Bow Waves and Perturbations Induced by the 21 August 2017 Solar Eclipse. Geophysical Research Letters, 44(24), 12,067-12,073. https://doi.org/10.1002/2017GL076054

When the APEP- launched during the 2023 annular solar eclipse, scientists saw a sharp reduction in the density of charged particles as the annular eclipse shadow passed over the atmosphere.

“We saw the perturbations capable of affecting radio communications in the second and third rockets, but not during the first rocket that was before peak local eclipse,” said Barjatya. “We are super excited to relaunch them during the total eclipse to see if the perturbations start at the same altitude and if their magnitude and scale remain the same.”

The next total solar eclipse over the contiguous U.S. is not until 2044, so these experiments are a rare opportunity for scientists to collect crucial data.

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Royal Sask. Museum research finds insect changes may have set stage for dinosaurs' extinction – CTV News Regina

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Research by the Royal Saskatchewan Museum (RSM) shows that ecological changes were occurring in insects at least a million years before dinosaur extinction.

Papers published in the scientific journal, Current Biology, describe the first insect fossils found in amber from Saskatchewan and the unearthing of three new ant species from an amber deposit in North Carolina, according to a release from the province.

The amber deposit from in the Big Muddy Badlands of Saskatchewan, which was formed about 67 million years ago, preserved insects that lived in a swampy redwood forest about one million years before the extinction of dinosaurs.

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“Fossils in the amber deposit seem to show that common Cretaceous insects may have been replaced on the landscape by their more modern relatives, particularly in groups such as ants, before the extinction event,” Elyssa Loewen, curatorial assistant, said.

The research team was led by Loewen and Dr. Ryan McKellar, the RSM’s curator of paleontology.

“These new fossil records are closer than anyone has gotten to sampling a diverse set of insects near the extinction event, and they help researchers fill in a 17-million-year gap in the fossil record of insects around that time,” Dr. McKellar said.

The three ant species discovered in North Carolina also belonged to extinct groups that didn’t survive past the Cretaceous period.

“When combined with the work in Saskatchewan, the two recent papers show that there was a dramatic change in ant diversity sometime between 77 and 67 million years ago,” Dr. McKellar said in the release.

“Our analyses of body shapes in the fossils suggests that the turnover was not related to major differences in ecology, but it may have been related to something like the size and complexity of ant colonies. More work is needed to confirm this.”

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Meteors, UFOs or something else? Dawson City, Yukon, residents puzzled by recent sightings in night sky – CBC.ca

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Some residents in Dawson City, Yukon, say they’ve been seeing unusual things in the night sky lately — and it’s not the Northern Lights. 

But some might say it’s equally as fascinating.

Over the past few weeks, some residents have taken to social media to report seeing what they described as a fireball or meteor overhead. And last week, two residents said they both saw something similar.

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Naomi Gladish lives in Henderson Corner, a subdivision approximately 20 kilometres from downtown Dawson City. She told CBC News she saw something while walking her dog Friday morning.

“I looked up and saw a bright star,” Gladish said. “Or what I thought was a star.” 

“Within a fraction of a second, I realized it was actually moving quickly. And then as I watched it, a second later it grew a long tail.”

Dawson City resident Naomi Gladish said she saw something similar to the fireball shown in this image from the American Meteor Society. (American Meteor Society)

Gladish said the unknown object started to change into a pale blue colour, like a gas flame. Then, a few seconds later, it appeared to burn out.

“I could see fire, or coal,” Gladish said. “Like red glowing bits, breaking off of it. And then that was it. I tried watching to see if I could see any dark chunks falling from that spot, or carrying on from that spot, but the sky was dark.”

A minute or two after Gladish saw what she thought was a meteor, she heard a boom in the distance.

“My dog and I both turned our head to that exact direction that I had just seen it,” she said.”I figured it was related.”

Two women walking through snowy mountain terrain.
Naomi Gladish hiking with her sister at Tombstone Park. (Submitted by Naomi Gladish)

Dawson resident Jeff Delisle reported seeing something similar at about the same time. He then took to social media to ask if anyone else had seen it. Two people responded saying they had. 

“It flew right above me,” Delisle wrote.

“Pretty cool looking…. What is it?”

Likely not a meteor, says astronomer

Christa Van Laerhoven, president of the Yukon Astronomical Society, came across Delisle’s post and got in touch. She asked about what he’d seen, such as how long it was in the sky and the colour.

Van Laerhoven told CBC News that based on descriptions from both Delisle and Gladish, she doesn’t believe it could have been a meteor.

She says a meteor would have been moving much faster, and the colouring would have appeared differently. 

“Meteors can be any colour but … as a rule, are a consistent colour. What these people were describing had different colours. So the head looked blue and then the tail was more of an orange,” van Laerhoven said.

“That’s just something that doesn’t happen with meteors.”

a meteor
This zoomed-in still from a dashcam video captured in 2020 by Louise Cooke from Mount Lorne, Yukon, shows what one space science expert said appears to be an unusually-bright meteor travelling across the sky. (Submitted by: Louise Cooke)

Van Laehoven believes there may be another explanation for the recent unusual sightings: space junk, falling to earth.

“Space junk, when it comes in … comes through the atmosphere and starts glowing that can be more irregular, because of the variety of materials that go into a spacecraft.”

Van Laerhoven also suggested it could a very fast plane, or someone playing with rockets.

Gladish, however, doesn’t think anyone in Dawson was playing with rockets on Friday morning.

“Unless they’re talking about someone in China, or like a distant land playing with very high, powerful rockets … then sure,” she said.

“This was not something that someone in Dawson was doing … This came from much, much higher and it was much, much different to anything that would be locally caused.”

Van Laerhoven also dismissed another possibility: alien visitors.

“If aliens were coming to Earth, we would know,” she said.

“Simply because it would take them so much effort to get here that it would be very hard to imagine them getting here and not doing something dramatic enough that we would actually know about it.”

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