What Is a Supernova? | NASA Space Place – NASA Science for Kids
2024年10月11日 · 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 energetic supernova explosions ever recorded. Image credit: NASA/CXC/M.Weiss.
What Is a Supernova? | NASA Space Place – NASA Science for Kids
2024年10月11日 · Los astrónomos creen que cada siglo hay unas dos o tres supernovas en galaxias como nuestra Vía Láctea. El universo contiene muchas galaxias, y gracias a ello, los astrónomos pueden observar unos pocos cientos de supernovas por …
Supernova | NASA Space Place – NASA Science for Kids
2024年10月11日 · NASA science games, articles and activities for kids.
What Is a Nebula? | NASA Space Place – NASA Science for Kids
2024年10月11日 · A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. Watch this video to learn all about nebulae!
What Is a Black Hole? | NASA Space Place – NASA Science for Kids
2024年10月11日 · Space is a pretty dark place. Even so, some areas are darker than others. Nothing is darker than a black hole. A black hole is an area of such immense gravity that nothing—not even light—can escape from it. Black holes form at the end of some stars’ lives.
What Are Constellations? | NASA Space Place – NASA Science for …
2024年10月11日 · There are a few different definitions of constellations, but many people think of constellations as a group of stars. Often, it's a group of stars that looks like a particular shape in the sky and has been given a name. These stars are far away from Earth.
The Amazing Hubble Telescope - NASA Space Place
2024年10月11日 · Small yet mighty! The Hubble Space Telescope takes beautiful images of our universe, which help scientists understand space better. Image credit: NASA. The Hubble Space Telescope was launched into orbit by space shuttle Discovery on April 24, 1990. Hubble orbits about 332 miles above Earth.
What Is Dark Matter? | NASA Space Place – NASA Science for Kids
2024年10月11日 · Dark matter is that invisible glue that keeps stars, dust, and gas together in a galaxy. This mysterious substance makes up the majority of a galaxy's mass and forms the foundation of our Universe's structure. Dark matter is still one of the greatest mysteries of science. Credit: NASA/JPL-Caltech.
What Is Gravity? | NASA Space Place – NASA Science for Kids
2024年10月11日 · Gravity is what holds the planets in orbit around the sun and what keeps the moon in orbit around Earth. The gravitational pull of the moon pulls the seas towards it, causing the ocean tides. Gravity creates stars and planets by …
How Do Hurricanes Form? | NASA Space Place – NASA Science for …
2024年10月11日 · Hurricanes are the most violent storms on Earth. People call these storms by other names, such as typhoons or cyclones, depending on where they occur. The scientific term for all these storms is tropical cyclone. Only tropical cyclones that form over the Atlantic Ocean or eastern Pacific Ocean are called "hurricanes."