China Needs Reusable Rockets

Posted on by onespaceman2000
Image (Credit): The July 24th launch of a Long March 5B rocket transporting China’s second module for its Tiangong space station. (CNS/AFP/Getty Images)

A few days ago debris from China’s Long March 5B rocket landed in the waters off the Philippine island of Palawan. The 1.8 million pounds of rocket brought a module to the Chinese space station. Such problems with Chinese rocket debris is a clear example that China needs to follow both SpaceX and Blue Origin and start using resusable rockets in the future.

NASA’s Administrator was not happy, tweeting:

The People’s Republic of China did not share specific trajectory information as their Long March 5B rocket fell back to Earth.

All spacefaring nations should follow established best practices, and do their part to share this type of information in advance to allow reliable predictions of potential debris impact risk, especially for heavy-lift vehicles, like the Long March 5B, which carry a significant risk of loss of life and property.

Doing so is critical to the responsible use of space and to ensure the safety of people here on Earth.

China has plans to develop reusable rockets for future heavy-lift missions to its space station and the Moon. This would certainly reduce the risk to parties below and hopefully add some efficiencies to the launch process.

Of course, China is not alone when it comes to falling space debris. SpaceX appears to be responsible for debris that landed in Australia last month (see below). While confirmation is still needed, the material appears to be from a SpaceX Dragon capsule.

Image (Credit): One of the panels of the debris found in Australia. (The Guardian/Brad Tucker)

Profile: China’s Xuntian Space Telescope

Posted on by onespaceman2000
Image: Artist’s impression of the Xuntian Survey Space Telescope.

Next year China plans to launch the Xuntian (Chinese for “survey to heavens”) Survey Space Telescope that will orbit near China’s space station. Like the Hubble Space Telescope, it will be easier to service from this location. Unlike the Hubble, it will have a greater field of view – about 300-350 times greater. This field of view will allow the telescope to observe about 40 percent of the sky within its 10 year lifespan. If it last 30+ years like the Hubble, it will capture even more of the sky.

In terms of the space telescope’s planned mission, a Chinese news story stated:

It will observe well over one billion galaxies and measure their positions, shapes and brightness which may help explain how those galaxies evolve…

The telescope will also be able to help determine the upper limit of neutrino mass and shed light on the mysterious dark matter and dark energy. They’re believed to account for the majority of mass-energy content of the universe.

The versatile telescope can undertake many more intriguing studies such as drawing galactic dust map of the Milky Way, observing how super-massive blackholes are gobbling up surrounding materials, exploring exoplanets and discovering new peculiar celestial bodies.

The Xuntian should be launched later next year and be fully operational in 2024.

As long as scientists around the world can share in these observations, this type of space race benefits everyone. The more eyes on the sky, the better.

Space Quote: China is Not Seizing the Moon

Posted on by onespaceman2000
Image (Credit): China’s Yutu 2 rover explores the far side of the moon shortly after its Jan. 2, 2019, touchdown. (China National Space Administration)

“As two scholars who study space security and China’s space program, we believe that neither China nor any other nation is likely to take over the Moon in the near future. It is not only illegal, it is also technologically daunting – the costs of such an endeavor would be extremely high, while the potential payoffs would be uncertain.”

-Statement by Svetla Ben-Itzhak, Assistant Professor of Space and International Relations, Air University and R. Lincoln Hines, Assistant Professor, West Space Seminar, Air University in the Astronomy magazine article “Why China is unlikely to claim the Moon anytime soon.” It follows an earlier statement by NASA Administrator Bill Nelson, who said, “We must be very concerned that China is landing on the Moon and saying: ‘It’s ours now and you stay out.‘”

Chinese Map of the Moon

Posted on by onespaceman2000
Image (Credit): Map of the Moon’s surface. (NSSDC Space Science Article Data Repository)

Earlier this month, China released a geological map of the Moon’s surface. It is to a scale of 1:2,500,000. Here is the accompanying description of the map:

Geologic maps of the Moon provide comprehensive information about the geologic strata, structural features, lithologies, and chronology of the lunar crustal surface, which reflect the evolution of the lunar crust under igneous processes, catastrophic impacts, and volcanic activities. The map in this repository is the first 1:2,500,000-scale lunar global geologic map, which incorporates the most comprehensive knowledge about the Moon by taking advantage of the latest exploration results and scientific findings. An updated lunar time scale is employed in this map to better reflect the dynamic evolution of the Moon. The map provides a state-of-the-art illustration of impact basins and craters of different periods, the distributions of 17 types of rocks and 14 types of structures.

With numerous countries considering lunar bases, greater details about the Moon’s surface could be very useful. I would have liked an overlay showing the various lunar mission remains already sitting on the Moon’s surface.

By the way, while the press is calling this the first comprehensive lunar map, there have been others, including the map below released two years ago by the U.S. Geological Survey’s (USGS) Astrogeology Science Center in Flagstaff, Arizona. I say the more maps the better for everyone.

Image (Credit): This new work represents a seamless, globally consistent, 1:5,000,000-scale geologic map derived from the six digitally renovated geologic maps. (USGS)