Astronauts

Astronauts wear pressurized suits in space to protect themselves from the vacuum of space, which has no air pressure. The suit provides a breathable atmosphere, regulates temperature, and maintains the necessary pressure for survival in the harsh conditions of space. It also shields astronauts from harmful radiation and micrometeoroids.

Astronauts train for zero-gravity by using specialized simulators like the Neutral Buoyancy Lab's giant pool, which allows them to practice spacewalks underwater to simulate the weightlessness of space. They also use parabolic flights on aircraft that create brief periods of weightlessness. Additionally, they undergo physical conditioning and strength training to cope with the physical demands of living and working in microgravity.

Anti-fog coatings are applied to the inside surface of the astronaut's helmet visor to prevent fogging. Additionally, proper ventilation and air circulation inside the helmet help reduce humidity and condensation buildup. Astronauts may also use anti-fog wipes or solutions as needed during a spacewalk.

Alan Shepherd was selected as one of the Mercury 7 astronauts in 1959, his first mission into space was in 1961, his last mission was Apollo 14 in 1971, and he retired from NASA in 1974.

Time between his first and last mission was 10 years.

Time between recruitment and retirement was 15 years.

The first two countries to put astronauts into space were the Soviet Union and the United States.

The third country to have a citizen enter space was Czechoslovakia.

The third country to launch their own citizen into space was China.

The third country to achieve launch capability was France.

The third country to put a satellite into space was Canada.

Their bones, heart, and muscles begin to waste away because they cannot strengthen themselves by working against Earth's gravity; if they return from over 8 months in space, their bones would instantly break. It's not a pretty picture.

The Apollo 1 mission in 1967 was a disaster where three astronauts - Gus Grissom, Ed White, and Roger Chaffee - died in a fire during a pre-launch test. This tragic event led to significant safety improvements in NASA's manned spaceflight programs.

The number of yearly openings for astronauts can vary depending on the needs of space agencies like NASA and ESA. Typically, there are only a handful of astronaut selection rounds each decade, with a limited number of positions available. It's not an annual recruitment process.

Exploring the universe can advance our scientific knowledge by discovering new phenomena, planets, and galaxies. It can also inspire humanity by pushing the boundaries of what we believe is possible and providing insights into our place in the cosmos. Additionally, space exploration can drive technological advancements that benefit society as a whole.

The first U.S. astronaut to conduct a spacewalk was Ed White on June 3, 1965, during the Gemini 4 mission. White spent about 21 minutes outside the spacecraft, tethered to it with a 25-foot umbilical cord.

There were eleven main engines on the Saturn V. Five on the first stage, five on the second stage and one on the third stage. This does not count the engine on the lunar lander.

How do I know? I worked as an Aerospace Engineer on the first stage of the Saturn V

during Apollo. My partner and I were the ONLY two women working on the Saturn V.

Sara Howard, Author of "Something Funny Happened on the Way to the Moon" and "The Greatest Explosions in the Universe."

No, you do not need to be born in the US to be an astronaut. NASA's astronaut selection criteria require that candidates be U.S. citizens, but they do not specify that they must be born in the country.

Astronauts breathe in spacecrafts by using a life support system that provides them with a breathable mix of oxygen and removes carbon dioxide. This system often includes tanks of compressed oxygen, scrubbers to remove carbon dioxide, and a ventilation system to circulate the air. In the case of the International Space Station, the air is constantly monitored and replenished as needed.

No, pecans are not the only food astronauts do not have to treat and dehydrate. Other foods that do not require dehydration include granola bars, nuts, tortillas, and some pre-packaged snacks. These foods are considered safe for consumption in their natural state during space missions.

The name of the shuttle where the woman astronaut died is the Space Shuttle Challenger. The Challenger disaster occurred on January 28, 1986, when the shuttle broke apart 73 seconds after liftoff, resulting in the tragic deaths of all seven crew members, including schoolteacher Christa McAuliffe.

Astronauts would have a hard time breathing on the moon because it lacks a breathable atmosphere. The moon has very little atmosphere, composed mostly of unbreathable gases like hydrogen, helium, and neon. Without adequate oxygen, astronauts would not be able to survive without a spacesuit and life support systems.

Alan B Shepard was grounded for the Gemini flight in 1963 due to an inner ear problem that affected his balance. This condition made him unfit for spaceflight at the time, and he had to undergo surgery to correct the issue before being cleared for future missions.

none. The Challenger exploded low in the atmosphere and Columbia burned up like a meteor high in the atmosphere. Neither were in space.

Valentina Tereshkova worked as a textile worker in a textile factory before becoming an astronaut. She also trained as a skydiver, which later contributed to her selection as the first woman to fly in space.

Astronauts use many common items in space that are also used in everyday life on Earth, such as toothbrushes, towels, and Velcro for securing objects in microgravity. They also use tools like screwdrivers and wrenches to perform maintenance on the spacecraft and equipment. Additionally, astronauts consume food and beverages that are similar to what we have on Earth, although they are specially packaged for space travel.

Astronauts face several challenges in zero gravity, including muscle atrophy, bone density loss, fluid shifts in the body, and changes in spatial orientation. These issues can affect bodily functions and create discomfort for astronauts during space missions. Adaptation to the microgravity environment is crucial for the long-term health of astronauts during their time in space.

Bread produces crumbs that can float in microgravity, creating a potential hazard to both equipment and astronauts. To avoid this, bread is typically avoided in favor of tortillas, which have a longer shelf life and don't produce crumbs.

Aside from doing the same things that are required to stay healthy on Earth, there is exercise that needs to be done, since the weightless environment places so much less strain on the body that the whole skeletal system tends to atrophy without extra exercise.

Michael Collins was the Apollo 11 Command Module pilot and stayed in orbit when Armstrong and Aldrin went down to explore the lunar surface on July 20, 1969. Each of the six Apollo landing missions (11, 12, 14, 15, 16, and 17) had one astronaut staying with the main craft and two astronauts taking the LEM (Lunar Excursion Module) to the surface and back.

Buzz Aldrin (born Edwin Eugene Aldrin, Jr.) was born on January 20, 1930.