The very idea of space exploration wouldn't be a reality if there were no astronauts. Taking the first daring leap, braving the unknown to crack open the door to the cosmos, that's exactly what the world's famous astronauts did. 

From pushing the boundaries of technology to conducting groundbreaking research, they unveiled the secrets of space, inch by inch, mission by mission. They faced unimaginable challenges, endured gruelling training, and stared down the unknown fearlessly.

This isn't just a list of famous astronauts in the world, it's a testament to the pivotal role they played in unlocking the cosmos for humanity.

Here is the list of famous astronauts who have captivated the world with their daring journeys, each with their own unique story to tell.

1. Yuri Gagarin

The first human in space, Gagarin's 1961 Vostok 1 flight lasted only 108 minutes, but it opened a new era. His iconic words, "I see the Earth. It is so beautiful!" resonated globally. Gagarin, a young fighter pilot, was chosen for his charm, courage, and optimistic spirit. 

Interestingly, he trained as a backup cosmonaut initially, but fate intervened when the original pilot fell ill. He became a national hero overnight, inspiring countless people to dream of space travel.

2. Alan Shepard

The first American in space, Shepard, followed Gagarin just months later in 1961 aboard Freedom 7. He quipped, "Let's this old bird fly!" before blasting off. Shepard later commanded Apollo 14, becoming the fifth person to walk on the Moon. 

A daredevil test pilot, he was known for his competitive spirit and sense of humour. He even smuggled a golf club onto the Moon and took a swing, declaring it "miles and miles."

3. Neil Armstrong

Uttering the unforgettable phrase, "That's one small step for a man, one giant leap for mankind," Armstrong became the first human on the Moon in 1969 aboard Apollo 11. His legacy remains forever etched in history. 

A quiet and introspective pilot, Armstrong was known for his meticulousness and calm demeanour under pressure. He trained extensively for the Moon landing, even practicing geology in a simulated lunar crater.

4. Valentina Tereshkova

In 1963, Tereshkova became the first woman in space, spending nearly three days aboard Vostok 6. Her courage paved the way for future generations of female astronauts. At 26, she was a textile factory worker and parachutist chosen for her physical fitness and focus. 

Tereshkova sang folk songs and kept a diary during her flight, inspiring women worldwide to pursue their dreams.

5. Sally Ride

The first American woman in space, Ride joined the Space Shuttle Challenger crew in 1983, conducting scientific experiments and inspiring countless young girls to reach for the stars. A physics graduate, Ride was known for her intelligence, athleticism, and calm demeanour. 

She served as a science communicator after her astronaut career, encouraging students to pursue STEM fields.

6. John Glenn

At 77, Glenn became the oldest person in space aboard STS-95 in 1998, proving age is just a number when it comes to space exploration. He served as a US Senator and remained a lifelong advocate for science education. A decorated Marine pilot and astronaut on the first American orbital flight, Glenn's return to space decades later captured the world's imagination.

7. Buzz Aldrin

The second person on the Moon with Armstrong, Aldrin played a crucial role in the Apollo 11 mission. His iconic moonwalk footage continues to capture imaginations. A skilled pilot and engineer, Aldrin held the crucial responsibility of piloting the lunar module during the descent. He also developed the docking procedures used for lunar rendezvous.

8. Sunita Williams

Holding the record for the longest spaceflight by a woman (322 days), Williams participated in four Space Shuttle missions and served on the International Space Station (ISS). She's a champion for STEM education and space exploration. 

A naval officer and helicopter pilot, Williams' perseverance and dedication are evident in her extensive space experience. She advocates for international cooperation in space exploration and inspires young women to pursue careers in science and engineering.

9. Chris Hadfield

The first Canadian to command the ISS, Hadfield gained fame for his captivating social media posts and rendition of David Bowie's "Space Oddity" while in orbit. He's a passionate advocate for space exploration and science communication. 

A former fighter pilot and engineer, Hadfield's charismatic personality and engaging communication skills brought the ISS and space exploration closer to the public.

10. Kalpana Chawla

Kalpana Chawla, an Indian-born American astronaut and aerospace engineer, became the first woman of Indian descent to go to the space.  In 1997, she journeyed on her historic first mission aboard the Space Shuttle Columbia.  

During her two spaceflights, Chawla logged over 30 days in space, conducting scientific research and skillfully deploying satellites with the robotic arm.  Though her life tragically ended in the Columbia disaster of 2003, her legacy as a pioneering astronaut and role model continues to inspire future generations.

11. Peggy Whitson

Holding the record for most cumulative spacewalk time by a woman (62 hours and 1 minute), Peggy Whitson served as commander of the ISS on Expedition 50/51. This dedicated scientist participated in seven space missions, conducting crucial research on the effects of spaceflight on the human body. 

An inspiration for women in STEM, her perseverance and leadership qualities paved the way for future generations of astronauts.

12. Fyodor Yurchikhin

With the record for most spacewalks by any astronaut (70!), Yurchikhin spent a staggering 847 days in space across six missions. This veteran cosmonaut conducted maintenance and assembly tasks on the International Space Station (ISS), showcasing his technical expertise and resilience. 

Known for his calm demeanour and problem-solving skills, Yurchikhin contributed significantly to the success of numerous ISS missions.

13. Koichi Wakata

Becoming the first Japanese astronaut to command the Indian Space Station (ISS) on Expedition 50/51, Wakata logged five space missions totalling 818 days in orbit. 

A skilled engineer and researcher, he participated in numerous scientific experiments and spacewalking activities. Wakata's dedication to international collaboration and promoting space exploration makes him a role model for young people worldwide.

14. Jessica Watkins

As the first Black woman to be selected by NASA in over two decades, Jessica Watkins is set to make history aboard the Artemis 2 mission in 2024. 

This geologist and aquanaut will be part of the first crewed Artemis mission orbiting the Moon. Her selection symbolises NASA's commitment to increasing diversity and inclusion in the astronaut corps, inspiring future generations to dream big. 

15. Liu Yang

As the first female astronaut from China, Liu Yang participated in China’s Shenzhou 9 mission in 2012, spending 13 days in space. This pilot and engineer played a crucial role in operating the spacecraft and conducting scientific experiments. 

Liu Yang’s selection and successful mission marked a significant milestone for China's space program and inspired young women in China to pursue careers in science and technology.

16. Rakesh Sharma

Etching his name in history as the first Indian citizen in space, Rakesh Sharma embarked on a seven-day mission aboard the Soviet Soyuz T-11 in 1984. This Air Force pilot flew alongside two Soviet cosmonauts, conducting medical experiments and participating in Earth observation studies.

He famously sent a heartwarming message to Earth, saying, "Saare jahan se achha," translating to "Better than the whole world," while describing his view of his home planet. This phrase resonated across India, solidifying him as a national hero and inspiring countless young people to pursue careers in science and technology.

17. Mae Jemison

The first African-American woman in space, Jemison joined the Endeavour crew in 1992, conducting medical experiments and inspiring young people to pursue careers in science and technology. 

A physician and astronaut candidate, Jemison's dedication to science and social justice paved the way for future generations of diverse astronauts. She continues to advocate for STEM education and inspire young people to reach for the stars.

These 17 famous astronauts represent just a fraction of the incredible individuals who have ventured into the cosmos. Their courage, dedication, and scientific contributions have pushed the boundaries of space exploration and continue to inspire us to reach for the stars.