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Old December 27th, 2019, 06:55 AM   #4901
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Most forums out there are pretty open in their attitude in my opinion. Not sure if the specific type of openness you seem to be looking for can be found anywhere, though...

Can you name any by name ?
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Old December 27th, 2019, 12:18 PM   #4902
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Can you name any by name ?
I've heard good things about the NASA Spaceflight forums. The Science and Spaceflight section of the Kerbal Space Program forums is quite decent as well. There are also various space-oriented subreddits, but those aren't very well suited for long discussions.
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Old December 29th, 2019, 03:06 AM   #4903
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Long March-5 Y3 blasts off from Wenchang Space Launch Center in south China's Hainan Province, Dec. 27, 2019. The rocket, coded as Long March-5 Y3, blasted off from the coastal launch center at 8:45 p.m. (Beijing time), carrying the Shijian-20 technological experiment satellite weighing over eight tonnes, the heaviest and most advanced communications satellite of the country. About 2,220 seconds later, the satellite was sent into its planned orbit. (Xinhua/Chen Yehua)
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Old December 30th, 2019, 01:15 PM   #4904
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From xinhuanet.com

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Xinhua Headlines: The return of Long March-5 inspires China to reach for the stars
Source: Xinhua| 2019-12-28 21:19:31|Editor: huaxia
By Xinhua writers Yu Fei, Quan Xiaoshu


With a long-cherished Chinese space dream, China's largest carrier rocket Long March-5 made a successful flight Friday evening, laying the foundation for a series of future space projects for China including exploring Mars, returning moon samples and constructing its own space station.



WENCHANG, Hainan, Dec. 28 (Xinhua) -- With a long-cherished Chinese space dream, China's largest carrier rocket Long March-5 made a successful flight Friday evening, inspiring China to explore deeper into space.

After suffering a failure two years ago, the new Long March-5 rocket soared into the sky like a reborn phoenix from the Wenchang Space Launch Center on the coast of southern China's tropical island province of Hainan at 8:45 p.m. (Beijing time), trailing a huge flame as bright as the sun, lighting up the clouds and sea.

The rocket, coded as Long March-5 Y3, sent the 8-tonne Shijian-20 technological experiment satellite, China's heaviest and most advanced communications satellite, into its planned orbit.

The success signifies that the carrying capacity of China's launch vehicles has reached the forefront of the world.

Wu Yanhua, deputy director of the China National Space Administration, said the success of the flight lays the foundation for a series of future space projects for China including exploring Mars, returning moon samples and constructing its own space station.

The Long March-5 made its maiden flight on Nov. 3, 2016, from Wenchang. However, the second large rocket, Long March-5 Y2, suffered a failure, as a malfunction occurred less than six minutes after its liftoff on July 2, 2017.

The research team discovered that the failure was caused by a problem in the engine of the first core stage of the rocket. "We have made improvements to the design, materials and technologies of the engine," said Li Dong, chief designer of the Long March-5 rocket from the China Academy of Launch Vehicle Technology (CALT) under the China Aerospace Science and Technology Corporation.

Qu Yiguang, deputy general director of the Long March-5 Y3 research team, said, "Under great pressure, the research team has put all the wisdom and efforts into the rocket over the past two years. We are very proud that we can participate in the development of the Long March-5, which represents the highest level of China's rocket technology."

After over two years of silence in Wenchang, Chinese welcomed the return of the "king" with excitement.

The Long March-5 is a large, two-stage rocket, capable of carrying a payload of 25 tonnes into low Earth orbit, 14 tonnes to geostationary transfer orbit or 8 tonnes to Earth-Moon transfer orbit, over twice the capacity of the current main Long March series rockets.

The rocket uses environmentally friendly fuel, including kerosene, liquid hydrogen and liquid oxygen, rather than highly toxic propellants.

The carrying capacity of the Long March-5 rocket equals that of other mainstream large-scale rockets in the global industry, greatly improving China's ability to launch spacecraft and laying the foundation for developing new-generation carrier rockets and heavy-lift launch vehicles, said Wang Xiaojun, head of the CALT.

As a milestone project upgrading China's launch vehicles, the development of the Long March-5 covered the most diversified engineering technologies and overcame the most difficult problems in the country's carrier rocket history, completing a massive scale of tasks along the way.

The Long March-5 rocket, with completely independent intellectual property rights, uses more than 200 key technologies.

It is more complex than any previous Long March rocket, and its design workload was more than 3.5 times that of previous projects. China also built the largest simulation laboratory in Asia for its tests.

Advanced digital technologies were applied in the design, analysis and tests of the Long March-5 rocket, which greatly shortened the development cycle and decreased costs.

More than 10,000 space engineers participated in the design, research and development of the Long March-5, which lasted for more than 10 years.

Friday's launch marks the end of a fruitful year for China's aerospace sector.

In January, China's Chang'e-4 probe made the first-ever soft landing on the moon's far side. In June, a rocket lifted off from a mobile platform in the Yellow Sea, completing the country's first offshore launch. In August, China's new commercial carrier rocket Smart Dragon-1 made its maiden flight.

China also completed the deployment of the core BeiDou Navigation Satellite System (BDS) constellation by sending 10 BDS satellites into space in 2019. Lately, it released the first batch of 3D images based on the data from Gaofen-7, the country's first civil-use optical transmission 3D surveying and mapping satellite that reaches the sub-meter level.

Since the Long March-1 sent China's first satellite into space nearly 50 years ago, the Long March series rockets have completed 323 flights.

In the past two years, China has had over 60 space launches, with a success rate of about 96 percent.

Over the past few decades, China's launch vehicle technology has been greatly improved with the ability to launch different types of spacecraft into different orbits.

The extent of space exploration is determined by the carrying capacity of launch vehicles.

The Long March-5 carrier rocket is a prerequisite for a series of China's major space programs in the future.

With the success of the Long March-5 Y3 rocket, China will see a busy year in space activities in 2020.

One of the highlights in 2020 will be the launch of China's first Mars probe by using the Long March-5 rocket. China aims to complete orbiting, landing and roving on the red planet in one mission.

China's current lunar exploration program includes three phases: orbiting, landing and returning. The first two phases have been accomplished, and the next step is to launch the Chang'e-5 probe to collect moon samples and bring them back to Earth.

The Chang'e-5 probe, weighing over 8 tonnes, is expected to be launched by Long March-5 in 2020.

China plans to complete the construction of its space station around 2022. A modified version of the new rocket, Long March-5B, will be used to build the space station. And the Long March-5B is expected to make its maiden flight in 2020.

In addition, two new-generation rockets, Long March-7A and Long March-8, are also expected to make their maiden flights next year.

China is also studying and drawing up longer-term space exploration plans including probing asteroids and the Jupiter system and setting up a scientific research station on the moon's south pole.

Those missions require more powerful launch vehicles. Experts say the Long March-5 will also lay the foundation for future rockets with heavier payload capabilities.■
































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Old January 5th, 2020, 04:36 PM   #4905
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Eyeball Plants Might Exist, And They're as Creepy as They Sound
https://www.sciencealert.com/eyeball..._HgH-PTF8ZO5gs




Quote:
You've heard of hot Jupiters. You've heard of mini-Neptunes. You've heard of super-Earths. But have you heard of Eyeball Planets? Yep - planetary scientists think there might be a type of exoplanet out there that looks disturbingly like a giant eyeball. Just sitting there. Staring.

But it's actually not as weird as it sounds - the appearance of these bodies has to do with tidal locking.

Tidal locking is when an orbiting body rotates at the same rate that it orbits. That means it always has one side facing the body it is orbiting, and the other side always facing away. The Moon, for instance, is tidally locked to Earth, that's why we never see its far side from here.

Earth isn't tidally locked to the Sun - that's why we have a day/night cycle - but we know there are exoplanets that are tidally locked to their stars. Which means one side is in perpetual day, and the other in perpetual night.

Each bathed in such different conditions, the day side might look very different from the night side. Depending how close the planet is to the star, one side could be dry, all the water burned away by stellar radiation; but the other side, in darkness, could be one huge ice cap wrapping around, terminating in a glacial ring. Something like this:


According to a 2013 study in the journal Astrobiology, that ring could be habitable - in perpetual twilight, with water from the melting glaciers enabling a fertile region where vegetation could grow.

That's a hot eyeball. Then, according to astronomer Sean Raymond, there's the icy eyeball, farther from its star's heat. It still has a night-side ice cap. But the star side isn't dry, barren Earth; instead it's a liquid ocean, which again could be habitable, like Earth's teeming seas.

"Hot eyeball and icy eyeball planets are extreme cases, but any planet that is tidally locked to its star is likely to look very different on its day side and its night side," Raymond noted.

"Differences could come from clouds clustered in certain areas, from preferential melting of ice on the day side or freezing of ice on the night side, or from any number of other possible sources. The galaxy may be littered with wild varieties of eyeball planets!"
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Old January 5th, 2020, 08:19 PM   #4906
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Old January 9th, 2020, 06:22 PM   #4907
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A new communication technology experiment satellite is launched by a Long March-3B carrier rocket at the Xichang Satellite Launch Center in Xichang, southwest China's Sichuan Province, Jan. 7, 2020. The satellite will be used in communication, radio, television and data transmission, as well as high throughput technology test. (Photo by Guo Wenbin/Xinhua)
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Old January 12th, 2020, 02:05 AM   #4908
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Quote:
Originally Posted by RyukyuRhymer View Post
Eyeball Plants Might Exist, And They're as Creepy as They Sound
https://www.sciencealert.com/eyeball..._HgH-PTF8ZO5gs


Hardly a mere possibility. This is a precise description of Gliese 581g discovered ten years ago, although its confirmation continued to be contentious for years to come. That ring is known as the Terminator, or Ring of Life, and is potentially the most stable natural habitable environment.
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Old January 13th, 2020, 07:10 AM   #4909
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Quote:
Originally Posted by Kyll.Ing. View Post
I've heard good things about the NASA Spaceflight forums. The Science and Spaceflight section of the Kerbal Space Program forums is quite decent as well. There are also various space-oriented subreddits, but those aren't very well suited for long discussions.
he was banned for posting his nonsense there and refusing to have a dialog when people tried several times to point his errors.
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Old January 13th, 2020, 08:46 PM   #4910
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he was banned for posting his nonsense there and refusing to have a dialog when people tried several times to point his errors.

This is complete BS. No "against the main stream" idea is welcomed there.

I am anxious to see Elon Musk StarShip on the orbit..only 3 months to go !
https://www.space.com/spacex-starshi...ix-months.html
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Old January 15th, 2020, 02:49 PM   #4911
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The new optical remote-sensing satellite for commercial use Red Flag-1 H9, along with three small satellites, is launched by a Long March-2D carrier rocket from the Taiyuan Satellite Launch Center in north China's Shanxi Province, Jan. 15, 2020. China sends a new optical remote-sensing satellite for commercial use into planned orbit from the Taiyuan Satellite Launch Center in north China's Shanxi Province on Wednesday morning. The satellite, belonging to the Jilin-1 satellite family, also named Red Flag-1 H9, was launched by a Long March-2D carrier rocket at 10:53 a.m. Beijing time. The new satellite, developed by the Chang Guang Satellite Technology Co., Ltd., has a super-wide coverage and a resolution at the sub-meter level. It is also capable of high-speed data storage and transmission. Via the same carrier rocket, three small satellites including NewSat7 and NewSat8 developed by an Argentinian company were also sent into space. (Photos/China News Service)
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Old January 16th, 2020, 02:20 AM   #4912
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Sea Dragon (monster 1960s concept) launch

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Old January 16th, 2020, 02:32 AM   #4913
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Looks awesome, but wouldn't water just add more resistance?
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Old January 16th, 2020, 05:07 AM   #4914
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I dont think so, buoyancy would help it
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Old Yesterday, 05:38 PM   #4915
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[FONT="Comic Sans MS"][SIZE="4"]A Kuaizhou-1A (KZ-1A) carrier rocket carrying a broadband communication satellite blasts off from the Jiuquan Satellite Launch Center in northwest China at 11:02 a.m. (Beijing Time) Jan. 16, 2020.



The broadband communication satellite, developed by a Beijing-based company, is the first one of the Beijing-based GalaxySpacet. (Photos: China News Service/Liu Wei)
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