Sep 25, 2025 · Although humans can't hop into a time machine and go back in time, we do know that clocks on airplanes and satellites travel at a different speed than those on Earth.

Sep 25, 2025 · Why does NASA care about years on other planets? NASA needs to know how other planets orbit the Sun because it helps us travel to those planets! For example, if we want a …

Sep 25, 2025 · explore What Are the Moon’s Phases? explore Is Time Travel Possible? Airplanes and satellites can experience changes in time! Read on to find out more. explore What Is an Impact …

Sep 25, 2025 · Gravitational waves travel at the speed of light (186,000 miles per second). These waves squeeze and stretch anything in their path as they pass by. A gravitational wave is an invisible (yet …

Jun 12, 2025 · What Is a Nebula? A nebula is a cloud of dust and gas in space. Is Time Travel Possible? Airplanes and satellites can experience changes in time! Read on to find out more. explore Printed …

Sep 25, 2025 · explore Is Time Travel Possible? Airplanes and satellites can experience changes in time! Read on to find out more. explore What Is an Impact Crater? explore What Is an Impact …

Sep 25, 2025 · Space Volcanoes! Explore the many volcanoes in our solar system using the Space Volcano Explorer. explore Build a Moon Habitat! A Planet Without a Sun? explore Thermosphere …

Sep 25, 2025 · A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star. An illustration of one of the brightest and most …

Sep 25, 2025 · Because laser light stays focused and does not spread out much (like a flashlight would), laser beams can travel very long distances. They can also concentrate a lot of energy on a very …

Sep 25, 2025 · Light year: It’s not a year, or an amount of time at all. It’s the distance light travels in one year. It’s the same as 5,878,499,810,000 miles (or 9,460,538,400,000,000 meters). When things are …