Master this deck with 21 terms through effective study methods.
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A nebula is a cloud of gas and dust in space. It is often the birthplace of stars, where gas condenses and begins to form protostars.
During the protostar stage, gas in a nebula condenses and heats up due to gravitational forces. This process leads to the formation of a star as the temperature rises.
A main sequence star is characterized by the process of hydrogen fusion occurring in its core. This stage is where stars, including our Sun, spend the majority of their life cycle.
Small and medium stars expand into red giants as they exhaust their hydrogen fuel. Eventually, they shed their outer layers and leave behind a white dwarf, which may cool to become a black dwarf.
Massive stars become supergiants and, upon exhausting their nuclear fuel, undergo a supernova explosion. Depending on their mass, they may collapse into a neutron star or a black hole.
The asteroid belt is located between the orbits of Mars and Jupiter. It contains numerous rocky bodies that vary in size and composition.
Comets are composed of ice, dust, and rock. They develop tails when they approach the Sun due to the sublimation of their icy components.
Meteoroids are small rocky particles in space. When they enter Earth's atmosphere and burn up, they are called meteors, often referred to as 'shooting stars.' If they survive the descent and land on Earth, they are known as meteorites.
Azimuth measures the direction of an object along the horizon, expressed in degrees from North in a clockwise direction. It is used to describe the position of celestial objects.
The payload is the part of the rocket that carries people, satellites, or scientific instruments into space. It is designed to be delivered to a specific destination.
Rocket engines burn fuel to create thrust, propelling the rocket forward. This process is based on Newton's Third Law, which states that for every action, there is an equal and opposite reaction.
Dangers of living in space include exposure to radiation, lack of gravity affecting muscle and bone health, psychological stress from isolation, and risks from micro-meteorites and life support system failures.
Spectroscopy is used to analyze light from stars to determine their composition. By examining absorption lines in a spectrum, scientists can identify the elements present in a star.
The Doppler effect refers to the change in wavelength and frequency of waves due to the motion of the source or observer. It is used in astronomy to determine if objects like stars or galaxies are moving toward or away from us.
The V-2 rocket, developed by Wernher von Braun during World War II, was the world's first long-range guided missile. It reached the edge of space and laid the groundwork for modern rocketry.
Sputnik 1, launched by the Soviet Union in 1957, was the first artificial satellite. Its launch marked the beginning of the Space Race and advancements in space exploration.
Satellites are used for various purposes, including communication (TV, internet), weather forecasting, GPS navigation, and environmental monitoring, such as tracking deforestation and pollution.
The electromagnetic spectrum encompasses all types of electromagnetic radiation, arranged from long to short wavelengths: radio, microwave, infrared, visible light, ultraviolet, X-ray, and gamma-ray.
Space suits provide astronauts with essential life support, including oxygen, temperature control, and protection from radiation while in the harsh environment of space.
The James Webb Space Telescope is designed to observe the universe in infrared wavelengths, allowing scientists to study celestial objects obscured by dust and to explore the formation of stars and galaxies.
Ethical concerns regarding space travel include the environmental impact of rocket launches, the high costs of space missions versus addressing Earth's problems, planetary protection, ownership of celestial bodies, and equitable access to space exploration.