Space News and Discussions

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Successful hypothermia in nonhuman primate paves the way for future application in human torpor during spaceflight
https://phys.org/news/2022-12-successfu ... paves.html
by Chinese Academy of Sciences

Hibernation is a state adopted by certain mammals as an adaptation to adverse winter conditions. Typical features of hibernation include greatly reduced metabolic activity and lowered body temperature.

As warm-blooded animals, primates (except lemurs) do not naturally hibernate or even experience torpor. But can we manipulate the body temperature of primates and make them fall into a hypometabolic state or even artificial hibernation?

A research team led by Dr. Wang Hong and Dr. Dai Ji from the Shenzhen Institute of Advanced Technology (SIAT) of the Chinese Academy of Sciences has recently reported the first reliable hypothermia in nonhuman primates caused by activating a group of hypothalamic neurons.

The study was published in The Innovation.
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India’s 1st human space flight to be launched in end of 2024: Centre

Updated on Dec 22, 2022 12:30 AM IST

India’s first human space flight, Gaganyaan, is targeted to be launched in 2024, the Union government told the parliament on Wednesday.

In a written reply to a question in the Lok Sabha on Wednesday, Jitendra Singh, minister of state (independent charge) of science and technology, atomic energy and space , said the crewed Gaganyaan mission—H1 mission—is being targeted to be launched in the fourth quarter of 2024.

“In view of the paramount importance of crew safety, two test vehicle missions are planned before the ‘H1’ mission to demonstrate the performance of crew escape system and parachute-based deceleration system for different flight conditions,” Singh’s reply read.

Singh said the uncrewed ‘G1’ mission is targeted to be launched in the last quarter of 2023 followed by the second uncrewed ‘G2’ mission in the second quarter of 2024, before the final human space flight ‘H1’ mission in the fourth quarter of 2024.

https://www.hindustantimes.com/india-ne ... 11273.html
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wjfox wrote: Wed Dec 28, 2022 9:06 am India’s 1st human space flight to be launched in end of 2024: Centre

Updated on Dec 22, 2022 12:30 AM IST

India’s first human space flight, Gaganyaan, is targeted to be launched in 2024, the Union government told the parliament on Wednesday.

In a written reply to a question in the Lok Sabha on Wednesday, Jitendra Singh, minister of state (independent charge) of science and technology, atomic energy and space , said the crewed Gaganyaan mission—H1 mission—is being targeted to be launched in the fourth quarter of 2024.

“In view of the paramount importance of crew safety, two test vehicle missions are planned before the ‘H1’ mission to demonstrate the performance of crew escape system and parachute-based deceleration system for different flight conditions,” Singh’s reply read.

Singh said the uncrewed ‘G1’ mission is targeted to be launched in the last quarter of 2023 followed by the second uncrewed ‘G2’ mission in the second quarter of 2024, before the final human space flight ‘H1’ mission in the fourth quarter of 2024.

https://www.hindustantimes.com/india-ne ... 11273.html
Fourth one? (Not counting the ISS)
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First results from LHAASO place tighter constraints on dark matter's lifetime
https://phys.org/news/2022-12-results-l ... -dark.html
by Liu Jia, Chinese Academy of Sciences

Scientists from the Large High Altitude Air Shower Observatory (LHAASO) have presented roughly 1.5 years of observational data, calculating new limits on the lifetime of heavy dark matter particles that have masses between 105 and 109 giga-electron volts.

The study, titled "Constraints on heavy decaying dark matter from 570 days of LHAASO observations," was recently published in Physics Review Letters.

The gravitational model of the Milky Way shows that there is a very high density of dark matter in the galactic center, and the gamma rays produced by the decay of this dark matter will radiate from the galactic center to the surroundings for hundreds of light-years or even thousands of light-years. However, for a long time, the observation of ultra-high-energy gamma rays produced by heavy dark matter has been complicated by the presence of other background radiation.
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This Simple Video Shows How Far You Could Throw a Ball on Other Planets

by Morgan McFall-Johnsen
December 28, 2022

Introduction:
(Science Alert) Imagine throwing a baseball. Easy, right? Maybe you've already done it a few times. Now imagine throwing a baseball on the Moon.

Maybe you've seen enough videos of astronauts bouncing around up there to have an idea. Here's a clearer picture, though: On the Moon you could throw that ball clean over the 186-foot-tall Leaning Tower of Pisa.

OK, now picture you're on Saturn. That's a bit harder to imagine, isn't it? Nobody has been there, much less taken video.

Thankfully, astronomer James O'Donoghue did all the math and made his own video, showing a ball throw on each planet, plus Pluto and the Moon. Take a look below:




Read more here: https://www.sciencealert.com/this-simp ... r-planets
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We May Be Able to Find Life on Enceladus Without Even Landing
by Michele Starr
January 4, 2023

Introduction:
(Science Alert) Saturn's moon Enceladus is one of the Solar System's prime extraterrestrial locations for life to thrive. It harbors a global salty ocean that internal heating theoretically keeps at temperatures hospitable to an alien marine ecosystem.

Detecting that life, however, is not such an easy matter. The moon is enclosed by a shell of ice that's estimated to be 5 kilometers thick (3.1 miles) at its thinnest point, and the ocean below it is 10 kilometers deep. This would pose a huge enough challenge here on Earth, never mind a moon half a Solar System away.

But we may not need to go to all the effort of drilling through Enceladus's shell after all. A new study finds that we ought to be able to detect life on the icy moon in the plumes of salty water that erupt from its surface – even if there's not all that much life there.
Read more here: https://www.sciencealert.com/we-may-be ... n-landing
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