- A. Sun
- B. Moon
- C. Stars
- D. All the above
(d) All the above
- A. Moon
- B. Mars
- C. Venus
- D. Mercury
(b) Mars
- A. 22nd October 2008
- B. 8th November 2008
- C. 22nd July 2019
- D. 22nd October 2019
(a) 22nd October 2008
- A. Mercury
- B. Venus
- C. Earth
- D. Mars
(d) Mars
- A. Newton’s first law
- B. Newton’s second law
- C. Newton’s third law
- D. All the above
(c) Newton’s third law
- A. room temperature
- B. low temperature
- C. very low temperature
- D. very high temperature
(c) very low temperature
- A. Apollo-5
- B. Apollo-8
- C. Apollo-10
- D. Apollo-11
(b) Apollo-8
Astronomy
Milky way
687
Mars Orbiter Mission
Neil Armstrong
true
True.Question 3
Mars is the smallest planet in the Solar system.
False
Correct statement:
Mercury is the smallest planet in the Solar system.
True.
False Correct statement:
The propellant of a rocket is may be in the form of solids or liquids.
Chandrayaan – Moon
Mangalyaan – Mars
Cryogenic – Fuel
Apple – 8 – First manned mission to the moon
Apollo-11 – First man landing mission to the moon
The stars, the planets, the Moon and any other objects like asteroids and comets in the sky are called celestial objects.
A collection of billions of stars held together by mutual attraction is called galaxy.
The objectives of Chandrayaan-1 were to find the possibility of water on the Moon by detecting water molecules and ice deposits. Another objective was to find and map the elements and minerals present on the Moon's surface. The mission also aimed to search for the existence of Helium-3, which could be valuable as a future fuel source. Chandrayaan-1 was designed to make a detailed three-dimensional atlas of the Moon's topography and surface features. Additionally, the mission sought to study the evolution and formation of the solar system by analyzing lunar rocks and soil samples, which contain information about the early history of our solar system.
The objectives of Mangalyaan were to develop the technology and expertise required for conducting interplanetary missions, which would help India gain experience in deep space exploration. The mission aimed to explore the surface of Mars and study its geographical features and terrain. Another key objective was to study the constituents and composition of the Martian atmosphere, including the presence of methane and other gases. Mangalyaan also sought to provide information about the future possibility of life on Mars and evidence of past existence of life, by analyzing the atmospheric composition and surface conditions that might have supported life in Mars's earlier history.
Cryogenic fuels are specialized fuels used in rocket engines that are maintained and stored at very low temperatures in order to keep them in liquid state. These fuels, such as liquid hydrogen and liquid oxygen, provide high energy density and are highly efficient for rocket propulsion. The term cryogenic refers to the extremely cold temperatures required, typically below minus 150 degrees Celsius, at which these substances remain in their liquid form rather than gaseous form.
Kalpana Chawla and Sunitha Williams are two notable Indian-origin astronauts who have worked at NASA. Kalpana Chawla was the first woman of Indian origin to go to space and served as a mission specialist and primary robotic arm operator. Sunitha Williams is another accomplished astronaut of Indian descent who has completed multiple space missions and spent considerable time aboard the International Space Station. Both have made significant contributions to space exploration and research programs conducted by NASA.
The discovery of presence of water molecules in the lunar soil.
Chandrayaan-1 confirmed that the Moon was completely molten once.
Chandrayaan-1 has recorded images of the landing site of the US space-craft Apollo-15 and Apollo-11.
It has provided high-resolution spectral data on the mineralogy of the Moon.
The existence of aluminium, magnesium and silicon were picked up by the X-ray camera.
More than 40,000 images have been transmitted by the Chandrayaan-1 camera in 75 days.
The acquired images of peaks and craters show that the Moon mostly consists of craters.
Chandrayaan-1 beamed back its first images of the Earth in its entirety.
Chandrayaan-1 has discovered large caves on the lunar surface that can act as human shelter on the Moon.
There are four major parts or systems in a rocket. They are:
Structural system
Payload system.
Guidance system.
Propulsion system.
1. Structural system (Frame):
It is the frame that covers the rocket. It is made up of very strong but light weight materials like titanium or aluminum. Fins are attached to some rockets at the bottom of the frame to provide stability during the flight.
2. Payload system:
It is the object that the satellite is carrying into the orbit. Payload depends on the rocket’s mission. The rockets are modified to launch satellites with a wide range of missions like communications, weather monitoring, spying, planetary exploration, and as observatories. Special rockets are also developed to launch people into the Earth’s orbit and onto the surface of the Moon.
3. Guidance system:
Guidance system guides the rocket in its path. It may include sensors, on-board computers, radars, and communication equipments.
4. Propulsion system:
It takes up most of the space in a rocket. It consists of fuel (propellant) tanks, pumps and a combustion chamber. There are two main types of propulsion systems. They are: liquid propulsion system and solid propulsion system.
Apollo Missions are the most popular and significant missions of NASA that achieved the historic goal of landing American astronauts on the Moon. The Apollo program consisted of a total of 17 missions designed to explore the Moon and advance human spaceflight capabilities. Among all these missions, Apollo-8 and Apollo-11 are particularly remarkable for their achievements. Apollo-8 was the first manned mission to travel to the Moon, where it orbited around the Moon and successfully returned to Earth, paving the way for future lunar exploration. Apollo-11 was the first 'Man Landing Mission' to the Moon, which successfully landed on the lunar surface on 20th July 1969. This historic mission achieved the remarkable feat of having Neil Armstrong become the first man to walk on the surface of the Moon, followed by Buzz Aldrin. The Apollo missions represented a major milestone in human space exploration and demonstrated the technological capabilities and determination of the space program to achieve ambitious goals.
We always see only one side of the Moon due to a phenomenon called tidal locking. The Moon does not have its own light source, but it reflects sunlight that falls on it. The key reason we see only one face of the Moon is that the time period of rotation of the Moon about its own axis is exactly equal to the time period of revolution of the Moon around the Earth. Both these periods are approximately 27.3 days. This means that as the Moon orbits Earth, it rotates at the same rate, keeping the same hemisphere always facing towards Earth. Consequently, the other side of the Moon, called the far side, always remains hidden from our view on Earth. This synchronous rotation is a result of gravitational forces and is why we observe only one side of the Moon throughout its orbital motion around our planet.