Home/space
- Recent Questions
- Most Answered
- Answers
- No Answers
- Most Visited
- Most Voted
- Random
- Bump Question
- New Questions
- Sticky Questions
- Polls
- Followed Questions
- Favorite Questions
- Recent Questions With Time
- Most Answered With Time
- Answers With Time
- No Answers With Time
- Most Visited With Time
- Most Voted With Time
- Random With Time
- Bump Question With Time
- New Questions With Time
- Sticky Questions With Time
- Polls With Time
- Followed Questions With Time
- Favorite Questions With Time
Which of the following space missions successfully landed a rover on Mars?
Curiosity
Discuss two widely accepted theories of origin of the earth. Elucidate the position of all planets within the solar system and write the important facts of the earth. [ UPSC PYQ 2024 ]
The two widely accepted theories of origin of the earth are: Nebular hypothesis The earth formed from a cloud of gas and dust, which collapsed under gravity, with the sun forming as it's center. Planetesimal hypotheses The earth formed from the accumulation of small Rocky bodies called planetesimal,Read more
The two widely accepted theories of origin of the earth are:
Nebular hypothesis
The earth formed from a cloud of gas and dust, which collapsed under gravity, with the sun forming as it’s center.
Planetesimal hypotheses
The earth formed from the accumulation of small Rocky bodies called planetesimal, which merged to form larger bodies, eventually becoming the earth.
Position of earth within the solar system
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
The earth is the third planet the sun
See lesswhich is the first Successfully launched satellite of India?
The first successfully launched satellite of India is Aryabhata . It was launched on April 19, 1975 , and was named after the ancient Indian mathematician and astronomer Aryabhata. The satellite was built by the Indian Space Research Organisation (ISRO) and launched from the Soviet Union’s Kosmos-Read more
The first successfully launched satellite of India is Aryabhata . It was launched on April 19, 1975 , and was named after the ancient Indian mathematician and astronomer Aryabhata. The satellite was built by the Indian Space Research Organisation (ISRO) and launched from the Soviet Union’s Kosmos-3M launch vehicle. Aryabhata was primarily an experimental satellite to test the capabilities of building and operating a satellite in space, marking a significant milestone in India’s space program.
See lessIndia
India, officially known as the Republic of India, is a country located in South Asia. It is the seventh-largest country by land area and has a population of over 1.4 billion people, making it the second-most populous country in the world. India is a federal constitutional republic governed under a pRead more
India, officially known as the Republic of India, is a country located in South Asia. It is the seventh-largest country by land area and has a population of over 1.4 billion people, making it the second-most populous country in the world. India is a federal constitutional republic governed under a parliamentary system and is divided into 29 states and 7 union territories. The country has a diverse geography, which includes the Himalayan mountains, the Indo-Gangetic Plain, and the Deccan Plateau. India is also home to a rich cultural heritage, including various languages, religions, and cuisines. It is a rapidly developing country with a growing economy and a prominent player in global affairs. India is also known for its vibrant culture, including music, dance, art, and literature, and is home to many UNESCO World Heritage Sites.
See lessWhat are the next steps in human space exploration, and what challenges need to be overcome?
Future Steps in Human Space Exploration Space exploration is at a critical juncture, with ambitious plans on the horizon that aim to push the boundaries of our understanding of the universe. To propel this endeavor forward, several key initiatives and challenges need to be addressed: Artemis ProgramRead more
Future Steps in Human Space Exploration Space exploration is at a critical juncture, with ambitious plans on the horizon that aim to push the boundaries of our understanding of the universe. To propel this endeavor forward, several key initiatives and challenges need to be addressed:
Artemis Program and Return to the Moon
One of the next big steps in human space exploration is NASA’s Artemis program, which aims to land the first woman and the next man on the Moon by the mid-2020s. This mission not only seeks to establish a sustainable human presence on the Moon but also serves as a stepping stone for future crewed missions to Mars.
International Collaboration and Partnerships
Collaboration between space agencies and countries is crucial for the success of ambitious human space exploration missions. Initiatives like the International Space Station (ISS) have showcased the benefits of global cooperation in space exploration. Future missions, including those to Mars, will require even greater collaboration to pool resources, expertise, and technology.
Mars Exploration and Colonization
Mars remains a focal point for human space exploration, with plans to send crewed missions to the Red Planet in the coming decades. Establishing a human presence on Mars presents a host of challenges, from long-duration space travel to creating sustainable habitats in a harsh environment. Overcoming these challenges will require advancements in technology, life support systems, and understanding the physiological impacts of long-term space travel on humans.
Private Sector Involvement and Commercial Spaceflights
The involvement of private companies, such as SpaceX and Blue Origin, has revolutionized the space industry and opened up new possibilities for human space exploration. Commercial spaceflights, space tourism, and the development of reusable rocket technology are shaping the future of space exploration. Balancing the interests of private companies with those of government space agencies poses a challenge in terms of regulation, safety, and international cooperation.
Challenges to Overcome
Radiation Exposure: Deep space missions expose astronauts to high levels of radiation, which can have long-term health consequences. Developing effective radiation shielding and mitigation strategies is crucial for ensuring the safety of crewed missions beyond Earth’s orbit.
See lessLife Support Systems: Sustaining human life in space for extended durations requires advanced life support systems that can recycle air, water, and waste efficiently. Developing reliable and robust life support technology is essential for long-duration missions to Mars and beyond.
Mental and Physical Health: The psychological and physiological effects of long-duration space travel on astronauts are significant challenges. Addressing issues such as isolation, confinement, muscle atrophy, and bone density loss requires holistic approaches to astronaut health and well-being.
Environmental Sustainability: Establishing sustainable habitats on other celestial bodies, such as the Moon or Mars, poses challenges in terms of resource utilization, energy generation, and waste management. Developing technologies for closed-loop systems that minimize environmental impact is crucial for long-term human presence in space.
In conclusion, the future of human space exploration is bright, with ambitious missions to the Moon, Mars, and beyond on the horizon. Addressing challenges related to radiation exposure, life support systems, astronaut health, and environmental sustainability will be key to realizing the vision of a sustainable human presence in space. Collaboration, innovation, and perseverance will be essential in overcoming these challenges and unlocking the next chapter of human space exploration.
can we use gravitational attraction and repulsion to make propulsion for space ships
the short answer is yes. and the long one is that countries like India with their space program ISRO have already used this method for their space ships to launch them further in space. as we know ISRO functions on a fraction of budget compared to giants like NASA we have to find new and innovativeRead more
the short answer is yes.
and the long one is that countries like India with their space program ISRO have already used this method for their space ships to launch them further in space.
as we know ISRO functions on a fraction of budget compared to giants like NASA we have to find new and innovative ways to make our rockets cheaper.
when launching a spacecraft further in space one of the most laborious task is to design a powerful engine which can lift of heavy weights off the earths gravitational force, but this creates a paradox, if you build more powerful engine it gets heavier, so to lift this extra weight u need an even more powerful engine, but this new engine will be even heavier.
so in order to solve this problem ISRO used earths gravity to escape earth gravity, the encircled earth like a satellite and using a catapult like system they thrusted the space shuttle out of earths gravity and into the space to reach mars(the mangalyan)
See lessUpcoming Projects of ISRO
One major project is the Gaganyaan mission, which aims to send Indian astronauts into space for the first time. This mission will demonstrate India's ability to send humans into low Earth orbit and bring them back safely. Anotherkey project is the Chandrayaan-3 mission, which will focus on landing aRead more
One major project is the Gaganyaan mission, which aims to send Indian astronauts into space for the first time. This mission will demonstrate India’s ability to send humans into low Earth orbit and bring them back safely.
Anotherkey project is the Chandrayaan-3 mission, which will focus on landing a rover on the Moon. After the success of Chandrayaan-1, which discovered water on the Moon, Chandrayaan-3 aims to explore the lunar surface further.
ISRO nis also working on the Aditya-L1 mission, which will study the Sun. It will gather information about solar activities and their impact on space weather.
Additionally, ISRO plans to launch the Astrosat-2, an advanced satellite for space observations, and the Cartosat-3, which will provide high-resolution Earth imaging for various applications.
Theseprojects reflect ISRO’s commitment to advancing space exploration and technology, showcasing India’s growing capabilities in space science.
See lessHow do black holes and other extreme cosmic phenomena challenge our current understanding of physics?
Black holes, neutron stars, gamma-ray bursts, gravitational waves, dark matter, dark energy, and cosmic inflation push the limits of our current understanding of physics. These extreme cosmic phenomena reveal significant gaps in our theories, especially where quantum mechanics and General RelativityRead more
Black holes, neutron stars, gamma-ray bursts, gravitational waves, dark matter, dark energy, and cosmic inflation push the limits of our current understanding of physics. These extreme cosmic phenomena reveal significant gaps in our theories, especially where quantum mechanics and General Relativity intersect.
Black Holes
Black holes, with their singularities where gravity becomes infinite, challenge our understanding of space and time. The event horizon raises profound questions about the nature of information, conflicting with the principles of quantum mechanics. Hawking radiation, which suggests black holes can emit radiation and eventually evaporate, poses additional challenges to our understanding of thermodynamics and quantum mechanics.
Neutron Stars and Pulsars
Neutron stars and pulsars, with their extreme densities and incredibly strong magnetic fields, require new insights from quantum mechanics and nuclear physics. These stars push the limits of our understanding of matter under extreme conditions.
Gamma-Ray Bursts
Gamma-ray bursts are the most energetic events in the universe, releasing immense energy in a short time. Understanding how such energy is produced and released so rapidly challenges our current physical models.
Gravitational Waves
The detection of gravitational waves, ripples in space-time caused by violent cosmic events like black hole mergers, has opened a new observational window into the universe. These observations challenge our understanding of gravity and provide new insights into the properties of black holes and neutron stars.
Dark Matter and Dark Energy
Dark matter and dark energy, which together make up about 95% of the universe’s mass-energy content, are still not understood. Dark matter’s gravitational effects are observable, but its nature remains unknown. Dark energy, which drives the accelerated expansion of the universe, remains one of the biggest mysteries in cosmology, challenging the completeness of General Relativity on cosmological scales.
Cosmic Inflation The theory of cosmic inflation, which posits a rapid expansion of the universe just after the Big Bang, explains the uniformity of the cosmic microwave background radiation but requires new physics beyond the Standard Model. It suggests the presence of unknown particles or fields.
In summary, these extreme cosmic phenomena expose the limitations of our current theories and drive the search for new, unified theories that can bridge the gap between quantum mechanics and General Relativity, providing a more comprehensive understanding of the universe.
See lessWhat are black holes and how do they impact the surrounding space?
What Are Black Holes? Definition: Black holes are regions in space where gravity is so strong that nothing, not even light, can escape from them. Formation: They form when massive stars collapse under their own gravity at the end of their life cycle. Event Horizon: The boundary around a black hole iRead more
What Are Black Holes?
Impact on Surrounding Space
Black holes are fascinating cosmic objects that have a powerful impact on their surroundings, influencing the movement of stars and the fabric of space-time.
See lessExplain the significance of the Hubble Space Telescope in advancing our understanding of the universe. What are some of its most important discoveries?
Hubble has transformed our understanding of space by revealing the vastness and complexity of the universe, capturing detailed images of distant galaxies, measuring cosmic expansion, and providing insights into stellar formation and black holes. Finding Distant Galaxies: Hubble’s Deep Field images,Read more
Hubble has transformed our understanding of space by revealing the vastness and complexity of the universe, capturing detailed images of distant galaxies, measuring cosmic expansion, and providing insights into stellar formation and black holes.
Hubble is important for astronomy because it provides crucial insights that ground-based telescopes cannot achieve, advancing our understanding of cosmic phenomena by avoiding atmospheric distortion and leading to groundbreaking discoveries.
See less