Space Technology
Introduction
Space Technology involves the use of engineering and scientific principles to design, develop, manufacture, and operate systems for space exploration and utilization. It encompasses a wide range of components, including satellites, space stations, ground infrastructure, monitoring systems, tracking centres, AI-powered analytics, and specialized software.
This technology serves as a powerful tool to tackle global challenges and plays a crucial role in contemporary life by supporting telecommunications, navigation services, weather forecasting, climate surveillance, and national defense.
Some of the applications of space technology in daily life
- Weather Forecasting: Space tech helps predict if it’s going to rain or shine, making planning easier.
- GPS Navigation: Satellites in space guide your phone so you never get lost.
- TV and Communication: Space satellites bring your favorite shows to your screen and connect your calls.
- Internet Everywhere: Thanks to space tech, internet signals reach even the remotest places.
- Exploring Other Planets: Robots with space tech explore faraway planets, sending us cool pictures.
- Helping Farmers: Space tech monitors crops, helping farmers grow our food more efficiently.
- Saving the Environment: Satellites in space keep an eye on Earth’s health, protecting our planet.
1. One million Earths could fit inside the Sun – and the Sun is considered an average-size star.
2. For years it was believed that Earth was the only planet in our solar system with liquid water. More recently, NASA revealed its strongest evidence yet that there is intermittent running water on Mars, too!
3. Comets are leftovers from the creation of our solar system about 4.5 billion years ago – they consist of sand, ice and carbon dioxide.
4. You wouldn’t be able to walk on Jupiter, Saturn, Uranus or Neptune because they have no solid surface!
5. The highest mountain known to man is on an asteroid called Vesta. Measuring a whopping 22km in height, it is three times as tall as Mount Everest!
6. The sunset on Mars appears blue.
Black holes are among the most mysterious cosmic objects, much studied but not fully understood. These objects aren’t really holes. They’re huge concentrations of matter packed into very tiny spaces. A black hole is so dense that gravity just beneath its surface, the event horizon, is strong enough that nothing – not even light – can escape. The event horizon isn’t a surface like Earth’s or even the Sun’s. It’s a boundary that contains all the matter that makes up the black hole.
Black holes don’t emit or reflect light, making them effectively invisible to telescopes. Scientists primarily detect and study them based on how they affect their surroundings:
- Black holes can be surrounded by rings of gas and dust, called accretion disks, that emit light across many wavelengths, including X-rays.
- A supermassive black hole’s intense gravity can cause stars to orbit around it in a particular way. Astronomers tracked the orbits of several stars near the center of the Milky Way to prove it houses a supermassive black hole, a discovery that won the 2020 Nobel Prize.
- When very massive objects accelerate through space, they create ripples in the fabric of space-time called gravitational waves. Scientists can detect some of these by the ripples’ effect on detectors.
- Massive objects like black holes can bend and distort light from more distant objects. This effect, called gravitational lensing, can be used to find isolated black holes that are otherwise invisible.
