Pic of the Week: The Third Interstellar Visitor

Posted on by onespaceman2000
Image (Credit): Interstellar comet 3I/Atlas captured by the Hubble Space Telescope. (NASA, ESA, D. Jewitt (UCLA), J. DePasquale (STScI))

This week’s image is from the NASA/European Space Agency’s (ESA) Hubble Space Telescope. It shows an image of interstellar comet 3I/Atlas from July 21, 2025. The comet was about 365 million kilometers from Earth. First identified by a telescope in Chile last month, this is the third such object to be observed by astronomers.

Here is a little more from the ESA about this unusual object:

Hubble also captured a dust plume ejected from the Sun-warmed side of the comet, and the hint of a dust tail streaming away from the nucleus. Hubble’s data yields a dust-loss rate consistent with comets that are first detected around 480 million kilometres from the Sun. This behaviour is much like the signature of previously seen Sun-bound comets originating within our Solar System. The big difference is that this interstellar visitor originated in some other Solar System elsewhere in our Milky Way galaxy. 3I/ATLAS is traveling through our Solar System at roughly 210,000 kilometres per hour, the highest velocity ever recorded for a Solar System visitor. This breathtaking sprint is evidence that the comet has been drifting through interstellar space for many billions of years. The gravitational slingshot effect from innumerable stars and nebulae the comet passed added momentum, ratcheting up its speed. The longer 3I/ATLAS was out in space, the higher its speed grew.

Is Ukraine Suggesting an End to US-Russian Cooperation in Space?

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In a recent Washington Post editorial titled “How to Shut Down Putin’s War Machine,” Andriy Yermak, who is the head of the presidential office of Ukraine, states that Roscosmos should not be considered as a “neutral civilian institution.” He notes that the space agency helps to guide Russian missile strikes, so it is just another part of the military-industrial complex.

Mr. Yermak goes on to state that Roscosmos “…must be sanctioned in full and banned from cooperating with Western scientific and academic institutions.”

So how would this apply to the International Space Station (ISS), which is clearly a scientific endeavor?

Russia has already threatened to leave the ISS many times, so its departure is something that has been contemplated by the US and Russia. But here we are talking about about pushing them off the station. Will they take their components and head home? Is a partial station solely dependent on the whims of Elon Musk better than a fully-functional station with the Russians?

Of course, a hot war with Russia is something else. Recent threats by both Russia and the US regarding nuclear weapons has not been helpful, but little has really changed on the ground since the initial Russian invasion (much to President Putin’s chagrin).

It is not only Ukraine questioning the Russian presence on the station. Retired NASA astronaut Terry Virts, who served as a commander on the ISS, recently said this to Radio Free Europe:

Cooperating with the Russians on the ISS is like going on an Antarctic expedition with Nazis in 1943…It’s just morally reprehensible.

So far both nations have decided that the current arrangement is working, but that may not last forever if the current spat between the former Russian president and the current American president continue. That would be unfortunate with Russia’s program limping along and the US space program looking at drastic cuts.

The last thing we need is an empty space station orbiting the Earth as a memorial to our foolishness here on the ground.

Space Stories: White House Destroys Satellite, US Nuclear Reactor Proposed for the Moon, and the End of the Lunar Trailblazer Mission

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Here are some recent space-related stories of interest.

—Oregon Public Radio: “Why a NASA Satellite that Scientists and Farmers Rely On May Be Destroyed on Purpose“

The Trump administration has asked NASA employees to draw up plans to end at least two major satellite missions, according to current and former NASA staffers. If the plans are carried out, one of the missions would be permanently terminated, because the satellite would burn up in the atmosphere. The data the two missions collect is widely used, including by scientists, oil and gas companies and farmers who need detailed information about carbon dioxide and crop health. They are the only two federal satellite missions that were designed and built specifically to monitor planet-warming greenhouse gases.

—CNN: “NASA Wants US to be the First Nation to Put Nuclear Reactor on the Moon“

Acting NASA Administrator Sean Duffy has directed the agency to fast-track plans to put a nuclear reactor on the moon. Expediting work to place a reactor on the lunar surface to help power moon exploration efforts would keep the United States ahead of China and Russia, both of which have “announced on at least three occasions” a joint effort to develop such a project by the mid-2030s, according to a directive dated July 31 and obtained by CNN.

—NASA: “NASA’s Lunar Trailblazer Moon Mission Ends“

NASA’s Lunar Trailblazer ended its mission to the Moon on July 31. Despite extensive efforts, mission operators were unable to establish two-way communications after losing contact with the spacecraft the day following its Feb. 26 launch. The mission aimed to produce high-resolution maps of water on the Moon’s surface and determine what form the water is in, how much is there, and how it changes over time. The maps would have supported future robotic and human exploration of the Moon as well as commercial interests while also contributing to the understanding of water cycles on airless bodies throughout the solar system.

Space Quote: Senators Question NASA Cuts

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Credit: NASA/JPL.

“Although Congress has not completed the appropriations process for FY 2026, the White House Office of Management and Budget (OMB) has already disregarded Congress’s constitutional authority to direct government spending, unlawfully impounding congressionally appropriated NASA FY 2025 funds. Before Congress had approved a single appropriations bill, the Trump Administration and OMB Director Russell Vought directed federal agencies to freeze over $100 million in appropriated funds for science initiatives at NASA. Amidst the threat of looming cuts, NASA has already lost over 2,000 senior-level employees at NASA centers in Maryland, Texas, Florida, Virginia, Alabama, and Ohio. These losses will deprive NASA of key expertise on science, human space flight, and mission support. In blatant violation of law and complete disregard for the authority of Congress, the President’s budget request has already done significant damage to American space exploration and innovation.”

-A statement in an August 1, 2025 letter from six Democratic US Senators to the acting NASA Administrator Sean Duffy pertaining to ongoing and planned cuts at the agency. The Senators requested responses to six questions, including “How does NASA intend to accomplish its mission of leading in space when the proposed funding cuts will gut world-renowned missions like Mar Sample Return (MSR) and trigger the mass layoff of employees with decades of institutional expertise and knowledge?” A good question.

Business as Usual: Launch of a New Crew to the ISS

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Image (Credit): Launch of the SpaceX Falcon 9 rocket from Kennedy Space Center earlier today sending the latest ISS crew into orbit. (NASA)

After a one day delay due to rain, a new crew is heading to the International Space Station (ISS). Earlier today, three astronauts and one cosmonaut departed from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. The crew members are NASA astronauts Zena Cardman and Mike Fincke, Japan Aerospace Exploration Agency (JAXA) astronaut Kimiya Yui, and Roscosmos cosmonaut Oleg Platonov.

Acting NASA Administrator Sean Duffy issued a strange message about “bold leadership,” then praising the launch as though this was something new. He went on to link it to future Moon and Mars missions. I think he is a little too eager to be relevant here.

The bottom line is that this is a typical mission for NASA, showing that the agency can still get a rocket off the ground even as its employees are jumping out of windows (okay, walking out of doors). The Moon and Mars will need to wait for another day (and a new NASA administrator).

The new crew will rendezvous with the ISS early Saturday morning.