Year: 2023

Arianespace signs deal with Spanish rocket startup PLD

8:58 am

Following up with its agreement with the UK rocket startup Orbex, Arianespace yesterday also signed a deal with the Spanish rocket startup PLD to study using that company’s as-yet-unflown Miura-5 rocket.

Like the Orbex deal, this agreement makes it possible for Arianespace to arrange launches using PLD’s rocket. It also tells us that Arianespace and the European Space Agency are shifting from designing and building their own rockets — a process that has failed to produce any profit and had presently left Europe with no launch capability — to acting simply as a customer buying that capability from independent competing private companies.

For this to work however both Orbex and PLD will have to get their rockets off the ground.

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China launches 41 satellites on single launch, a record for that country

8:49 am

China today successfully used its Long March 2D rocket to place 41 satellites in orbit, a new record for that country, lifting off from its interior Taiyuan spaceport in north China.

No word on where the rocket’s first stage crashed within China, or whether it landed near any habitable areas. The Chinese state-run press also provided no information about any of those 41 satellites.

The leaders in the 2023 launch race:

40 SpaceX
23 China
8 Russia
5 Rocket Lab

American private enterprise still leads China 45 to 23 in the national rankings, and the entire world combined 45 to 39, with SpaceX by itself still leading the rest of the world, excluding other American companies, 40 to 39.

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June 14, 2023 Quick space links

7:11 pm

Courtesy of BtB’s stringer Jay.

 

  • Diagram from ULA outlining the pattern of decay for orbital debris, depending on orbit

    • This diagram was posted in connection with a proposal from ULA’s CEO, Tori Bruno, suggesting a system similar to carbon credits to eliminate space junk. Bruno also suggests the U.S. should “kickstart” this program. The timing, the same day the WEF released its own space junk guidelines, suggests he is all-in on strong international regulation, along with the kind of scams (such as carbon credits) that this regulation always goes hand-in-hand with. It also suggests he wants to use that regulation to beat down his competitors, since on the open market ULA is failing miserably at this task.

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Drainage channel between two Martian hollows

12:01 pm

Drainage channel between two Martian hollows
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on April 28, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Dubbed a “terrain sample” by the camera team, it was likely taken not as part of any specific research project but to fill a gap in the camera’s schedule so as to maintain that camera’s proper temperature. When they have to do this, they try to pick interesting targets, though there is no guarantee the result will be very interesting.

In this case the camera snapped what appears to be a drainage channel between two deeper hollows. The channel sits about 100 feet above the western hollow and 260 feet above the eastern hollow. This makes some sense, as the overall drainage in this region is going from the west to the east, and then to the north.
» Read more

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Astronomers detect vaporized elements in atmosphere of hot Jupiter-sized exoplanet

8:23 am

Using the Gemini telescope in Hawaii, astronomers have detected several elements in atmosphere of hot Jupiter-sized exoplanet, dubbed WASP-76b, that would normally be found in rocks, but here are vaporized because the exoplanet orbits so close to its star.

In 2020 and 2021, using Gemini North’s MAROON-X (a new instrument specially designed to detect and study exoplanets), Pelletier and his team observed the planet as it passed in front of its host star on three separate occasions. These new observations uncovered a number of rock-forming elements in the atmosphere of WASP-76b, including sodium, potassium, lithium, nickel, manganese, chromium, magnesium, vanadium, barium, calcium, and, as previously detected, iron.

Due to the extreme temperatures of WASP-76b’s atmosphere, the elements detected by the researchers, which would normally form rocks here on Earth, are instead vaporized and thus present in the atmosphere in their gaseous forms. While these elements contribute to the composition of gas giants in our Solar System, those planets are too cold for the elements to vaporize into the atmosphere making them virtually undetectable.

The data not only suggests such elements exist in the solar system’s gas giants, but that such elements are common in solar systems elsewhere. That possibility increases the chances of other planets like Earth, capable of sustaining life as we know it, in addition to sustaining life as we don’t know it.

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World Economic Forum decides its business is running space too!

8:13 am

We’re the government and we’re here to help you! The World Economic Forum (WEF) yesterday released its proposed new set of guidelines for mitigating space junk in orbit, even though some of the most important commercial satellite operators (SpaceX and Viasat) have not signed on.

The Space Industry Debris Mitigation Recommendations document, released by the WEF June 13, outlines recommendations to avoid collisions that can create debris by limiting the lifetime of satellites in orbit after they have completed their missions and improving coordination among satellite operators.

Among those recommendations is to establish a success rate for “post-mission disposal,” or removal of satellites from orbit after the end of their missions, to 95% to 99%. That disposal should be completed no more than five years after the end of each satellite’s mission.

You can read the guidelines here [pdf], which the WEF is pushing governments worldwide to adopt. Though SpaceX and Viasat have not signed on, 27 companies have endorsed the guidelines, including OneWeb, Airbus, Axiom, and a host of orbital tug and space junk removal startups, the latter of which all benefit from these guidelines.

While the proposals makes some sense, everyone in the space industry should remain skeptical, and resist the call for more government regulation. Once this power is given to government it will never be recanted, and will only grow with time. Moreover, all signs indicate that such interference by law by government is unnecessary. Both satellite operators and most rocket companies (the exception mostly China) have been making strong efforts to deal with the issue of space junk, for profit. The fact that there are a host of orbital tug and space junk startups right now illustrates this. Investors have realized there is money to be made removing satellites and space junk. They don’t need government telling them what to do.

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BepiColumbo about to do third Mercury flyby

7:58 am

In its long journey to get into orbit around Mercury, BepiColumbo needs to do nine different flybys of the inner planets, with third fly-by of Mercury coming up on June 19, 2023.

The mission launched into space on an Ariane 5 from Europe’s Spaceport in Kourou in October 2018 and is making use of nine planetary flybys: one at Earth, two at Venus, and six at Mercury, to help steer into Mercury orbit.

After this flyby, the mission will enter a very challenging part of its journey to Mercury, gradually increasing the use of solar electric propulsion through additional propulsion periods called ‘thrust arcs’ to continually brake against the enormous gravitational pull of the Sun. These thrust arcs can last from a few days up to two months, with the longer arcs interrupted periodically for navigation and manoeuvre optimisation.

The spacecraft will zip past Mercury at a height of 147 miles. If all goes well, this dual orbiter mission, carrying both a European and a Japanese orbiter will arrive in 2025, beginning a planned three year mission in different complementary orbits.

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Celine Dion & Josh Groban – The Prayer

6:01 pm

An evening pause: Performed live I think in 2009. Normally I would start the embed at the beginning of the song, but I think the story Dion tells at the beginning is worth hearing to gain some context. It also serves to explain Groban’s comments at the end.

Hat tip Doug Johnson.

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Arianespace signs deal to study the possibility of using Orbex’s commercial rocket for launches

5:20 pm

In what must be considered a major sea change in Europe, Arianespace — the European Space Agency’s (ESA) official commercial launch company — has now signed a deal with Orbex, a rocket startup based in the United Kingdom, to study the possibility of using Orbex’s not-yet-launched Prime rocket for future European launches.

In particular, it is expected that future collaboration would be particularly beneficial for customers planning small satellite constellations, providing a flexible solution for Low-Earth Orbit (LEO) payloads. Light and heavy-lift launch vehicles could jointly support customers in deploying their initial constellations into the required orbital planes, provide precise injections of a smaller number of satellites through dedicated missions, as well as provide replenishment and replacement launches.

While the ESA began developing a partnership with Orbex back in 2021 when it awarded Orbex a development contract worth 7.45 million euros, for Arianespace to go directly to this independent company for launch services suggests the new policy of ESA to stop developing its own rockets but to become a customer hiring the rockets of private companies is gaining steam.

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June 13, 2023 Quick space links

5:07 pm

Courtesy of BtB’s stringer Jay.

 

 

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