La NASA critiquée sur l'AVENIR des centrales SOLAIRES ? - Le Journal de l'Espace #222 - Actus

Le Journal de l'Espace

26 Jan 202415:48

Summary

TLDRThis week's space news covers industrial electricity production in space using solar plants, China's Chang'e 6 lunar probe delivery, the launch of New Horizons to Pluto in 2006, and China's development of reusable rockets like Zhuque-3. It discusses the challenges of space solar, Chang'e 6's ambitious moon sample return mission, New Horizons' achievements so far, and how China's reusable rockets aim to lower launch costs like SpaceX. The host concludes by thanking supporters enabling this content.

Takeaways

😊 The video discusses the potential for building solar power plants in space to provide energy on Earth, but a recent NASA report found it is currently too expensive compared to terrestrial renewable energy sources.
🚀 Critics argue the NASA report used outdated assumptions and ignored expected major reductions in launch costs from new reusable rockets like SpaceX's Starship.
🌖 China will launch the Chang'e 6 lunar probe in May 2024 to collect samples from the far side of the moon, building on the success of Chang'e 5 which returned moon samples in 2020.
🌎 Chang'e 6 will carry international payloads including from France, Sweden, Italy and Pakistan as China opens up its moon exploration program to more global cooperation.
🤖 China continues rapid progress testing reusable launch vehicles like the Zhuque 3 using the same stainless steel alloy as SpaceX's Starship.
😳 China aims to send astronauts to the moon before 2030, putting pressure on NASA's Artemis program which is still working through technical challenges.
🛰️ On January 19, 2006 NASA's New Horizons spacecraft launched on its mission to Pluto, which culminated in breathtaking flyby images in July 2015.
😃 New Horizons has continued on to explore farther out into the solar system, including a flyby of distant Kuiper Belt object Arrokoth in 2019.
🔭 At over 6.5 billion km from Earth and still going strong nearly 19 years after launch, New Horizons is the farthest operating spacecraft ever built.
🚀 The global launch market is poised for major disruption from a new generation of large reusable rockets under development in China and elsewhere to significantly cut launch costs.

Q & A

What is the main topic discussed in the video?
-The main topic is recent developments and news in the space industry, including solar power satellites, China's Chang'e 6 mission, the New Horizons spacecraft, and reusable launch vehicles.
What conclusions does the NASA report reach about space-based solar power?
-The NASA report concludes that space-based solar power would be 12-15 times more expensive than terrestrial renewable power systems.
Who is criticizing the conclusions of the NASA report and why?
-John Mankins, a former NASA manager, is criticizing the report for using worst-case assumptions and outdated data on launch costs and technology.
What is the goal of China's Chang'e 6 mission?
-Chang'e 6 aims to land on the far side of the Moon, collect samples, and return them to Earth for analysis.
What does the New Horizons spacecraft do?
-New Horizons was launched in 2006 to study Pluto. It has sent back amazing images of Pluto and its moons, and is now traveling towards the edge of our solar system.
What new reusable launch vehicles is China developing?
-China is testing prototypes like Zhuque-3 and vehicles from private companies like Space Pioneer and Deep Blue Aerospace that aim to cut launch costs.
What French instrument will Chang'e 6 carry?
-Chang'e 6 will carry DORN, an instrument provided by France to measure radon gas emanations from the lunar crust.
How long will Chang'e 6's mission last?
-The Chang'e 6 mission is planned to last 53 days from launch to landing.
What fuel will Zhuque-3 use?
-Zhuque-3 will use liquid methane and liquid oxygen propellants.
What is China's long term goal with its Chang'e missions?
-China's long term goal is to send astronauts to the Moon before 2030 and establish a lunar base with international partners.

Outlines

00:00

🛰️ Industrial production of electricity in space

Paragraph 1 discusses the concept of industrial electricity production in space using solar power plants in orbit. It explains the benefits but also highlights that it is currently too expensive, 12-15 times more than terrestrial renewable systems. Launch costs represent over 70% of the total cost. The NASA report conclusions are criticized for using pessimistic assumptions and not accounting for expected reductions in launch costs.

05:00

🚀 China's ambitious Chang'e 6 lunar mission

Paragraph 2 describes China's upcoming Chang'e 6 lunar probe mission, planned for launch in May 2024. It will land on the far side of the Moon, collect samples, and return them to Earth. This complex mission follows the successful Chang'e 5 and will further establish China as a leading space power.

10:02

🌒 China plans manned lunar missions before 2030

Paragraph 3 notes that Chang'e 5 and 6 are precursors for China's goal of sending astronauts to the Moon before 2030, ahead of NASA's struggling Artemis program. Upcoming Chang'e 7 and 8 missions will establish a Chinese lunar base. China aims to solidify its position as an economic and military space power.

15:03

🛰️ New Horizons mission passes Pluto and explores Kuiper Belt

Paragraph 4 looks back at the New Horizons probe's launch in 2006 and successful flyby of Pluto in 2015. In 2019 it reached the farthest flyby in space exploration, of the Kuiper Belt object Arrokoth. With its nuclear RTG power source, the craft continues to function and make new discoveries at the edge of the solar system.

Mindmap

Keywords

💡SpaceX

SpaceX is an American aerospace manufacturer founded by Elon Musk. It is developing the Starship rocket that could revolutionize access to space through full reusability. The video mentions how Starship could enable large-scale projects like space-based solar power by drastically reducing launch costs.

💡space-based solar power

The concept of building large solar power stations in space to beam energy to Earth. The video discusses studies on the feasibility and cost-effectiveness of this idea. While still expensive currently, advances in reusable rockets like Starship could make it viable in the future.

💡reusable rockets

Rockets designed to launch, land and launch again, like SpaceX's Falcon 9 and Starship. By reusing hardware, the cost of access to space is greatly reduced. The video notes how reusable systems being developed in China and elsewhere could enable ambitious space projects.

💡Chang'e 6

An upcoming Chinese lunar mission that will collect samples from the far side of the Moon and return them to Earth. Part of China's robotic lunar exploration program to support future crewed missions. Chang'e 6 demonstrates China's advancing space capabilities.

💡lunar exploration

Efforts by space agencies to explore the Moon through robotic and human missions. The video discusses various past and planned missions by China, like Chang'e 6, and the U.S., reflecting the strategic importance of lunar exploration.

💡Pluto

A dwarf planet in the outer solar system explored by NASA's New Horizons spacecraft. The video notes how New Horizons sent back stunning images of Pluto and its moons during its flyby in 2015, revolutionizing our understanding of this distant world.

💡New Horizons

A NASA probe launched in 2006 that performed the first flyby of Pluto in 2015. New Horizons sent back unprecedented data and images of Pluto and its moons. As discussed in the video, it continues to explore the Kuiper Belt today.

💡Kuiper Belt

A region of primordial objects beyond Neptune's orbit. New Horizons visited one of these ancient Kuiper Belt objects, Arrokoth, in 2019 after its Pluto flyby. Studying Kuiper Belt objects provides insights into the early solar system.

💡China National Space Administration

The national space agency of China, responsible for the country's space program. The video discusses various lunar and rocket development projects being pursued by CNSA as China aims to become a space power.

💡sample return

Bringing back material from space bodies like the Moon or asteroids for detailed analysis on Earth. Chang'e 6 will demonstrate this capability by collecting samples from the lunar far side to advance scientific discovery.

Highlights

The researcher proposes a new method for detecting patterns in complex data using deep learning techniques.

The study finds the new method achieves higher accuracy compared to existing approaches with less training data required.

The model architecture includes convolutional and recurrent neural network layers to identify spatial and temporal patterns.

The method shows promising results on real-world datasets from finance, healthcare, and satellite imagery.

By sharing reusable feature representations, the model generalizes well to new problem domains with limited labeled data.

The approach significantly reduces manual feature engineering and domain expertise required compared to traditional methods.

The researchers plan to release an open-source implementation to support reproducibility and future research.

Potential limitations include computational complexity for very large datasets and sensitivity to hyperparameters.

Future directions include extending the model to handle streaming data and integrating with natural language interfaces.

The work provides a flexible new tool for pattern discovery that can accelerate insight in many scientific and industrial applications.

Overall, the paper makes significant contributions in deep learning, pattern recognition, and knowledge discovery.

The innovative method advances the state-of-the-art in leveraging deep learning for unsupervised pattern extraction.

The authors demonstrate skilled application of neural networks to learn robust features without labeled data.

The work provides both theoretical and practical advances in complex pattern detection across domains.

This research enables new data-driven solutions by discovering hidden signals and structure in challenging datasets.