
Is Time Travel Possible? | NASA Space Place – NASA Science for Kids
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.
Solar System | NASA Space Place – NASA Science for Kids
Sep 25, 2025 · Eek! 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 How Long is a Year on …
What Is a Satellite? | NASA Space Place – NASA Science for Kids
Sep 25, 2025 · But, usually, the word "satellite" refers to a machine that is launched into space and moves around Earth or another body in space. Earth and the Moon are examples of natural satellites.
Even though this spacecraft is still inside our solar system, its signal, traveling at light speed, takes 12 hours to reach Earth! So, if Voyager’s signal takes that long to reach us, you can begin to imagine …
What Is a Supernova? | NASA Space Place – NASA Science for Kids
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 …
Where Do Old Satellites Go When They Die? - NASA Space Place
Like every other machine, satellites do not last forever. Whether their job is to observe weather, measure greenhouse gases in the atmosphere, or point away from Earth to study the stars, …
Universe | NASA Space Place – NASA Science for Kids
Sep 25, 2025 · Eek! Airplanes and satellites can experience changes in time! Read on to find out more. It all depends on what the spacecraft will do! Read on to learn more. A transit is when one object in …
All About Neptune | NASA Space Place – NASA Science for Kids
Sep 25, 2025 · Time on Neptune One day on Neptune goes by in 16 hours. Neptune has such a long journey around the Sun it takes 165 Earth years to go around once. That’s a long year! Neptune's …
Telling a pine from a maple ... from space! - NASA Space Place
Sep 25, 2025 · Besides sorting out trees, Landsat images show how the land changes over time. Cities growing, rain forests and farm lands shrinking, more or less rain falling, rivers flooding, wildfires …
How Does GPS Work? | NASA Space Place – NASA Science for Kids
Aug 29, 2022 · Your phone, or any device with a GPS, is programmed to know where all the satellites are at any given time. The phone uses that information—along with the amount of time the signal …