A Beginner’s Guide to the Universe
A Beginner’s Guide to the Universe
Today, we know that the universe is about 13.8 billion years old. This estimate comes from the Big Bang Theory. Scientists consider it the best explanation for how the universe began and evolved. All scientific theories are based on evidence,…
What is the biggest thing in the universe? This question sounds simple. But the answer takes us on a journey across space. We will start small and slowly go bigger. And don’t worry—we will keep everything easy to understand. Earth…
When we look at the night sky, it feels endless. Stars, galaxies, and space stretch in every direction. But does it ever stop? Is there an actual edge of the universe? These questions have fascinated humans for a long time.…
When you look up at the night sky, it feels endless. Stars stretch in every direction. You might wonder, does it ever stop? Or does it go on forever? This is one of the biggest questions in science: Is the…
When we look up at the night sky, we see stars. Some shine brightly. Some are faint. Anyhow, we can see the stars but not the planets, except the ones in our solar system. Scientists now believe that around many…
When you look up at the night sky, you might see stars, planets, and sometimes even a cloudy patch of light. That faint patch is not a star. It is not a cloud either. It is a galaxy. This galaxy…
The speed of light is one of the most important numbers in science. It tells us how fast light travels in a vacuum. This speed is about 299,792 kilometers per second or about 186,000 miles per second. Here’s the strange…
When we step outside on a bright day, we feel the warmth of the Sun. We see its light fill the sky. But have you ever wondered, How Long Does It Take for Sunlight to Reach Earth? The light you…
When we walk on land, everything feels flat. Buildings stand straight. Water seems level. But when we look at photos from space, Earth looks round. So, what is the shape of the Earth really? Let’s explore this simple but important…
Have you ever looked up at the sky and noticed how the Sun rises in the east and sets in the west? Or why the sun seems to move across the sky during the day? This happens every day. But…