What Are the Main Objects Found in Space?

You gaze up at the night sky. Dots of light sparkle against the dark. What are those twinkling things? Stars? Planets? Something wilder? Space holds wonders beyond imagination. Main objects found in space include familiar ones like planets and moons in our solar system. Then come stars that light everything up. Galaxies swirl with billions … Read more

Why Is Space a Vacuum and What Does That Mean?

Imagine floating in total silence. Nothing surrounds you, just endless black. No air rushes past. No sound echoes. That’s space, a near-perfect vacuum. Earth’s atmosphere holds air tight because gravity pulls it close. Space lacks that pull in most places. Matter spreads thin, about 5.9 protons per cubic meter on average. So, space stays empty. … Read more

How Scientists Study Space from Earth

Astronomers spot galaxies billions of light-years away using telescopes right here on our planet. Yet Earth’s atmosphere blurs that view like heat waves over a hot road. It blocks key wavelengths too. You might wonder how they pull off sharp images of stars and planets anyway. Scientists use powerful ground telescopes, smart fixes for air … Read more