What Astronauts Do?
Arvind Singh
| 13-03-2025

· Science Team
When we think of astronauts, our minds often wander to the grand adventures they have in space.
But beyond the heroic images of spacewalks and lunar landings, the daily life of astronauts is far more complex and demanding than we might imagine.
In this article, we'll explore the many responsibilities astronauts juggle, the skills they need, and the challenges they face on their journeys beyond Earth.
What Do Astronauts Actually Do?
Astronauts are more than just space travelers; they are pioneers, scientists, engineers, and leaders. Their jobs go beyond floating in microgravity. Whether it's conducting experiments, fixing spacecraft, or staying physically fit in space, astronauts' roles are diverse and vital to the success of their missions.
Scientific Research: Pushing Boundaries in Space
One of the primary duties of astronauts is conducting scientific research. The microgravity environment of space offers scientists a unique opportunity to study how various phenomena behave in ways that cannot be replicated on Earth. From studying the effects of space on biological organisms to experimenting with new technologies, astronauts play a crucial role in advancing our understanding of space and its potential applications.
Spacewalks: The Risks and Rewards
When we picture astronauts, we often imagine them floating outside their spacecraft during a spacewalk. Officially known as Extra-Vehicular Activity (EVA), spacewalks are essential for maintaining spacecraft, conducting repairs, and testing new equipment. These activities, however, come with significant risks, as astronauts must work in the vacuum of space while tethered to the craft. They must be highly trained to handle these tasks and ensure the safety of both themselves and the spacecraft.
Maintenance and Repairs: Keeping the Spacecraft Running
Just like any home, spacecraft require regular maintenance. Astronauts are trained to repair and troubleshoot various systems aboard the spacecraft. They take on the roles of plumbers, electricians, and even IT support, ensuring that everything from the power supply to the life-support systems operates smoothly. This training is critical to preventing failures that could jeopardize the mission.
Physical Fitness: Staying Strong in Microgravity
Living in space without gravity can weaken astronauts' muscles and bones, so maintaining physical fitness is a top priority. To combat this, astronauts spend around 2.5 hours every day exercising. This regimen helps them stay in peak physical condition and allows them to adjust to Earth's gravity once they return. From using specialized equipment to resistance training, staying fit is essential for astronauts to carry out their duties effectively.
Communication: The Vital Link to Earth
Astronauts are not only working in isolation, but they also serve as the communication bridge between space and Earth. They are in constant contact with mission control, sharing data and updates about the mission's progress. Furthermore, astronauts often participate in public outreach activities, where they engage with the public to share their experiences, promote space exploration, and inspire future generations of scientists and explorers.
Piloting Spacecraft: Mastering the Art of Navigation
Some astronauts are also required to pilot spacecraft. While modern spacecraft are equipped with advanced automation, astronauts must still be able to take control in emergencies. Piloting a spacecraft requires sharp skills and a deep understanding of both the spacecraft and the environment in which they operate. Whether they are docking with the ISS or navigating in lunar orbit, astronaut pilots must be ready for any challenge that arises.
Everyday Tasks: Cooking, Cleaning, and More
Life in space isn't all about high-tech experiments and spacewalks. Like all of us, astronauts have to deal with the day-to-day chores that keep their living space functional. Cooking, cleaning, and personal hygiene take on new complexities in microgravity. For instance, astronauts must be creative when it comes to washing their hair, using a special shower cap to prevent water from floating away. Cooking, too, is an adventure, as food must be carefully prepared and heated in a limited environment. Though the meals have improved since the early days of space exploration, astronauts still have to make do with pre-packaged meals and limited cooking facilities.
How Do You Become an Astronaut?
Becoming an astronaut isn't an easy feat. Candidates must meet strict qualifications, including a degree in engineering, biological sciences, physical sciences, or mathematics, along with years of professional experience or extensive piloting hours. NASA, for example, requires candidates to pass rigorous physical and mental health tests to ensure they can withstand the pressures of space travel. Beyond the technical qualifications, astronauts must also possess strong leadership, communication, and teamwork skills, as these qualities are essential for success in the confined space of a spacecraft.
Life After Space: Continuing the Mission on Earth
For many astronauts, their careers don't end once they return to Earth. Many go on to pursue careers in education, public speaking, and advocacy. They use their experiences in space to promote STEM education, contribute to policy discussions, or work in the private aerospace industry. Some astronauts even run philanthropic initiatives to inspire the next generation of space explorers.
Conclusion: Astronauts Are More Than Just Space Travelers
Astronauts are pioneers, adventurers, and experts who play a pivotal role in our exploration of the cosmos. Their work goes beyond what we see on TV or read in books. They are the ones who help us understand the mysteries of space, from conducting groundbreaking research to maintaining the safety and functionality of spacecraft. As we continue to explore further into the universe, it is through their efforts that we will uncover more about our place in the cosmos.
Thank you for joining us, Lykkers! We hope this glimpse into the life of an astronaut has sparked your curiosity about space. Stay inspired and keep looking up!