Leonard David's INSIDE OUTER SPACE

Archive for September, 2021

China’s trio of Taikonauts have returned to Earth. The Shenzhou-12 crew — Nie Haisheng, Liu Boming and Tang Hongbo — touched down on September 17 at the Dongfeng landing site in north China’s Inner Mongolia Autonomous Region.

 

 

The crew spent three-months in Earth orbit, the first sent to begin assembling China’s space station.

 

 

On June 17, the Shenzhou-12 spaceship was launched from the Jiuquan Satellite Launch Center in northwest China and docked with the space station core module Tianhe. After docking, the three astronauts entered the core module and began their three-month stay in space.

During the space trek, the crew carried out two extravehicular activities, ran a set of space science and technology experiments, some dedicated to the continuous construction and operation of the space station. Also evaluated, were recycling and life support system gear, as well as station operations and in-orbit maintenance.

To watch just-released video of the return of the crew, go to:

https://youtu.be/Ec8dyLkVoXs

https://youtu.be/ftcRgMe0IsI

https://youtu.be/FoorpSN7va0

 

A “Safeguarding the Astronomical Sky Foundation” has been established to preserve the astronomical sky by calling for a halt to further launches and deployment of megaconstellations.

According to those engaged in the effort, humankind stands at a precipice from which there will be no return.

“A Great 21st Century Space Rush is now underway by commercial enterprises and the military, fomented and enabled in the U.S. by the FCC [Federal Communications Commission] and other U.S. government agencies to grab, deploy, transform, and own the Heavens for private gain, defense, and weaponization.”

At issue for the Italy-based SAS Foundation: Over the next 10 years 80,000+ non-stationary low orbit satellites will be launched and seamlessly integrated in terrestrial 4G/5G/6G+ industrial and military networks. Scores of new satellites are being launched every week from the U.S. and other countries.

Suing the FCC

It’s the SAS Foundation view that ground-based astronomical observations will be severely damaged by the ongoing deployment of large fleets of satellites to ensure the functioning of future telecommunications technologies.

A legal action called “Healthy Heavens Trust Initiative” was begun a few months ago, which is currently suing the American FCC in American federal courts of justice – filed on August 13.

The SAS Foundation was established as a non-profit-making non-governmental organization (NGO)-type Association/Foundation, “to give a clear reference to all environmental protection associations, professional and amateur astronomical associations, individual astronomers and all astronomical bodies and societies.”

Not a distant threat

The SAS Foundation, together with the “Appeal by Astronomers” supports the Società Astronomica Italiana petition initiative against the night-sky light pollution.

“Astronomers are extremely concerned by the possibility that Earth may be blanketed by tens of thousands of satellites, which will greatly outnumber the approximately 9,000 stars that are visible to the unaided human eye. This is not some distant threat. It’s already happening,” according to the Appeal by Astronomers.

After gathering more than 2,000 signatures of astronomers from more than 50 countries the Appeal is now ready to be used at the local level to increase awareness by governments and NGOs of some of the harms that will be caused by those satellites.

For more information, go to:

https://astronomersappeal.wordpress.com/safeguarding-the-astronomical-sky-foundation-sas-foundation/

Healthy Heavens Trust Initiative (HHTI) at:

https://healthyheavenstrust.org/

The Appeal by Astronomers at:

https://astronomersappeal.wordpress.com/safeguarding-the-astronomical-sky-foundation-sas-foundation/

China’s next milestone in constructing the country’s space station has rolled out to the launch pad at the Wenchang Spacecraft Launch Site in south China’s Hainan Province.

A Long March-7 booster was vertically transported to its liftoff location on Thursday. The launcher is topped by the uncrewed Tianzhou-3 cargo ship. The hardware will undergo final tests before the planned launch to China’s space station in the coming days.

Return to Earth

Meanwhile, the now in Earth orbit Shenzhou-12 crew is returning to Earth, tomorrow, on September 17. Earlier in the day, the China Manned Space Engineering Office announced the spacecraft had successfully separated from China’s space station.

After departure from the Tianhe core station module, the Shenzhou-12 spacecraft crew is performing orbiting and radial rendezvous tests with the space station. Doing so, they will verify radial rendezvous technology, a technique for subsequent piloted missions.

The Shenzhou-12 trio of taikonauts will parachute into the Dongfeng landing site in north China’s Inner Mongolia Autonomous Region. A search and rescue team from China’s Jiuquan Satellite Launch Center in the Gobi Desert recently conducted drills at the landing site.

 

New record…for China

The Shenzhou-12 crew has worked and lived in the space station for 90 days, setting a new record for Chinese astronauts’ in-orbit stay for a single mission.

Launched on June 17, the Shenzhou-12 trio entered the space station’s core module on the same day.

The China space station, orbiting the Earth at a height of about 250 miles (400 kilometers), is still under construction. Eight more missions, including three piloted flights, are still being arranged to complete the space station by late next year.

Radial rendezvous

China’s Shenzhou-12 spaceship crew is conducting radial rendezvous with the Tianhe core module combination in orbit for the first time on Thursday.

Different from the forward and rearwards rendezvous China had done in the past on its spacecraft, the radial rendezvous is a much more difficult task to achieve in terms of the technical level, said Xie Yongchun, director of the Technology Committee in China Academy of Space Technology (CAST)’s 502 Research Institute.

“The forward and rearward rendezvous are conducted on a 200-meter contact point. It is a stable point, which means it can be kept unmoved if the engines on the spacecraft are off. But the radial rendezvous is something different,” Xie told China Central Television (CCTV).  “Due to the kinetic characteristics of the orbit, the spacecraft will not be able to stay there stably in space. Therefore, we will keep conducting orbit control of the spacecraft.”

Attitude maneuver

During the radial rendezvous process, Shenzhou-12 has to adjust its attitude constantly. How to keep the attitude of the spacecraft stable and how to keep its interface with the core module accurate are difficult problems faced by aerospace scientists.

“We must ensure that the sensor information will not be lost in the process of attitude maneuver, in a dynamic process. This is more difficult to achieve than when the sensor is in a stable status. We have to solve this problem by improving the measurement accuracy and stability of the sensor in dynamic conditions,” Xie said.

The radial rendezvous test on Shenzhou-12 this time will be conducted without the docking process, in efforts to prove whether or not the sensor on the spacecraft, which can be viewed as the spacecraft’s “eyes”, can play its role effectively.

“It will have a great impact on our measurement accuracy if we can’t see the mark point clearly. Another thing is, the lighting conditions might be different during the process of the radial rendezvous, very different from the forward and rearward rendezvous. Since the space station is in orbit, the lighting conditions may change anytime during the rendezvous process. This will affect the reflection characteristics of the mark. So we have to conduct trial operations beforehand,” Xie said.

Launch schedule

The soon to launch Shenzhou-13 piloted spaceship will dock with the Tianhe core module, starting a three-person, six-month stay in orbit, according to the China Manned Space Agency (CMSA).

After the five launch missions this year, China plans to have six more missions in 2022, including the launch of the Wentian and Mengtian lab modules, two cargo spacecraft and two crewed spaceships  to complete the construction of the space station.

New videos

Go to these newly released videos for a view of the rollout of the Tianzhou-3 supply ship, radial rendezvous, the Shenzhou-12 crew departing the core module, and preparations underway for recovery of the returning trio of Taikonauts.

Long March-7 Y4 ready to launch Tianzhou-3 at:

https://youtu.be/rQbl6HjRDAs

Shenzhou-12 radial rendezvous test explained at:

https://youtu.be/Srt70MyXeFo

China’s Shenzhou-12 Manned Spaceship Undocks from Space Station Core Module for Return Trip at:

https://youtu.be/KBeyx-him5M

Ground Search Team Ready for Return of Shenzhou-12 Crew to Dongfeng Landing Site at:

https://youtu.be/gQQEgmYDC8A

 

 

With an increasing cadence, humans from multiple nations are rocketing into Earth orbit, and soon outward to the moon. Given added commercial as well as government flights, chances are also soaring of a stranded crew desperately requiring an in-space rescue.

A new report flags the fact that the United States government and commercial spaceflight providers have no plans in place to conduct a timely rescue of a crew from a distressed spacecraft in low Earth orbit, or anywhere else in space. Without orchestrated rescue planning, today’s space travelers will journey at their own risk.

Space tourism

For example, this week’s Inspiration4 is the world’s first all-civilian trek into orbit. The mission has four private citizens who will reside onboard a SpaceX Crew Dragon spacecraft for a three-day, Earth-circling jaunt.

Then there’s the dearMoon project – a lunar tourism mission and art project conceived and financed by Japanese billionaire Yusaku Maezawa. It will make use of a SpaceX Starship on a private spaceflight flying a single circumlunar trajectory around the Moon. This week-long journey of Maezawa and crewmates is expected to occur no earlier than 2023.

To read my new SPACE.com story “Humanity needs a space-rescue capability, report stresses” go to:

https://www.space.com/space-rescue-capability-needed-report

China’s Shenzhou-12 crew appears headed for return to Earth this Friday, September 17, departing the Tianhe space station core module.

A navigation warning issued indicates that the Taikonaut trio will land around 5:30 UTC, according to the Zarya website, maintained by Robert Christy.

The crew — Nie Haisheng, Liu Boming and Tang Hongbo – are targeted for landing at the Dongfeng landing site in the desert of North China’s Inner Mongolia Autonomous Region.

Utilized for the first time for returning space adventurers, that landing zone received the unpiloted return capsule of China’s trial version of a new-generation crewed spacecraft back in May 2020, following a flight of two days and 19 hours.

Prior to the Shenzhou-12 spaceship return, it was earlier reported that it will also conduct circumnavigation and radial rendezvous tests with the core module, all preparatory work for the Shenzhou-13 mission.

 

Next liftoffs

To continue the build-up of China’s Tiangong (Heavenly Palace) space station, an uncrewed Tianzhou-3 resupply spaceship is now being primed for liftoff, perhaps departing next Monday from the southern island of Hainan.

A piloted Shenzhou-13 spaceship is reportedly ready for a takeoff in September-October from the Jiuquan Satellite Launch Center in northwest China.

This new fresh trio — likely including a woman – will stay in orbit for six months.

Given the launch today of the SpaceX Falcon booster, placing the four-person Inspiration4 into Earth orbit, there will be 14 humans circling the planet: The Shenzhou-12 threesome; Seven people on the International Space Station, and the Inspiration4 space travelers.

 

NASA’s Curiosity Mars rover at Gale Crater has just begun performing Sol 3238 duties.

“Curiosity is working her way through a busy drill campaign at the Maria Gordon location and keeping her eyes on the beautiful cliffs nearby,” reports Lauren Edgar, a planetary geologist at USGS Astrogeology Science Center in Flagstaff, Arizona.

“Unfortunately the weekend plan didn’t uplink to the rover due to a DSN [Deep Space Network] issue,” Edgar adds, so that means that a recent two-sol plan (3238-3239) was devoted to recovering those activities.

Drill sample analysis

The robot’s Chemistry & Mineralogy X-Ray Diffraction/X-Ray Fluorescence Instrument (CheMin) got to analyze the drill sample last week, so now it’s the Sample Analysis at Mars (SAM) Instrument Suite turn.

The plan calls for the drop-off to SAM and Evolved Gas Analysis.

CheMin will also dump the sample to clear out the cell for future use.

Delicious target

“The science team planned a lot of targeted remote sensing observations, including a ChemCam observation down the drill hole, multiple Mastcam mosaics to investigate nearby stratigraphy and nodule-rich areas, another ChemCam observation of a delicious target named “Chocolate Bloc” and a lot of environmental monitoring activities to monitor dust and clouds and search for dust devils,” Edgar concludes. “Can’t wait to find out what SAM thinks of the Maria Gordon sample!”

 

 

The Curiosity Mars rover is now performing Sol 3236 tasks.

Scott Guzewich, an atmospheric scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland reports that the robot’s primary goal this weekend is for the Sample Analysis at Mars (SAM) Instrument Suite to study the material from the newly created Maria Gordon drill hole – #33 that the rover has done.

 

 

 

“SAM will heat the material to very high temperatures to determine what it’s made of and how water may have interacted with the rock in the distant past,” Guzewich adds.

Also on tap is for Curiosity to perform a variety of imaging with Mastcam and take a Chemistry and Camera (ChemCam) long-distance image of Rafael Navarro mountain.

 

 

Newly released images from flight 13 of the Ingenuity Mars Helicopter. The aerial device acquired these images using its high-resolution color camera. This camera is mounted in the helicopter’s fuselage and pointed approximately 22 degree below the horizon. These photos were acquired on September 5, 2021, Sol 193 of the Perseverance rover mission.

For flight 13, the rotorcraft flew at an altitude of 26 feet (8 meters). Ingenuity traveled at 7.3 mph (3.3 m/s) taking images pointing southwest of the South Seítah region. This aerial scouting continues to aid in planning future moves of NASA’s Perseverance rover.    

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Image Credits: NASA/JPL-Caltech

 

 

The Allen Telescope Array, an ensemble of 42 antennas used in the search for extraterrestrial intelligence (SETI), is threatened by the Dixie Fire, which is now roughly 12 miles south of the Array.

In a statement from the SETI Institute, Alex Pollak, the Array’s Science and Engineering Operations Manager, said the fire’s slow northward march has provoked the need for evacuation.

Anticipating the possibility that it might reach the antennas, the observatory staff contacted the U.S. Forest Service’s Fire Department to prepare the site against eventual damage. Two teams from the Forest Service, about a dozen people in total, removed brush from near the antennas. Trees in the area were pruned of any branches lower than ten feet above the ground.

This is not the first time the Array has been threatened. In the summer of 2014, the so-called Eiler fire reached State Highway 89, approximately two miles from the antennas.

Unique facility

The Allen Telescope Array is a unique facility. It is the only radio telescope constructed with SETI as a principal activity. Its 42 telescopes are currently being refurbished with more sensitive receivers and follow-on electronics that will greatly speed the search for signals that would prove the presence of technological societies in other star systems. This upgrade is funded by Franklin Antonio, a co-founder of the California semiconductor company, Qualcomm.

As of this writing, there are more than 4,000 firefighters battling the Dixie Fire, and the hope is that it will not reach the Observatory.

The SETI Institute quest is to understand the origins and prevalence of life and intelligence in the universe and share that knowledge with the world. Research at the SETI Institute encompasses the physical and biological sciences and leverages expertise in data analytics, machine learning and advanced signal detection technologies.

The SETI Institute is a distinguished research partner for industry, academia and government agencies, including NASA and NSF.

NASA’s Curiosity Mars rover at Gale Crater is now conducting Sol 3234 duties.

Curiosity has collected its 33rd drilled sample from the “Maria Gordon” drill location.

Delivery and analysis of drilled material from Maria Gordon is headed for the Chemistry and Mineralogy instrument – or CheMin for short. That device performs chemical analysis of powdered rock samples to identify the types and amounts of different minerals that are present.

The robot recently sent back these images of its surrounding landscape:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

To view an informative video regarding Curiosity’s exploration of a mountain on Mars, hosted by Curiosity’s Deputy Project Scientist, Abigail Fraeman of NASA’s Jet Propulsion Laboratory, go to:

https://mars.nasa.gov/system/video_items/6041_JPL-20210816-MSLf-0001-360cc.m4v