planetfacts.org的 10 大竞争对手

nineplanets.org

The Universe is so big because it is constantly expanding, and it does so at a speed that even exceeds the speed of light. Click for more.

planetsforkids.org

I really hope you enjoy the information that I have provided on this website. You will find lots of information about our solar system with lots of questions and answers and games for you to play. We also have a color in section where you can download pictures and have fun. Remember everything here is … Continue reading "Welcome to Planets for Kids"

space-facts.com

Interesting facts about space, galaxies, planets, moons and other solar system objects. Explore the universe through interesting diagrams, photos and more!

amazing-space.stsci.edu

NASA Science seeks to discover the secrets of space, the origins of the universe, search for life elsewhere, and protect and improve life on Earth.

skyandtelescope.com

In the news this week: Globular clusters have the detailed scoop on our galaxy's past, and a "heartbeat" black hole binary in the Milky Way has gone mysteriously dim.

astro4edu.org

The IAU OAE glosary contains definitions of astronomical terms that will often appear in educational contexts. Definitions are written by astronomers and reviewed by astronomers and teachers to ensure they are correct and easily understandable.

kidzone.ws

educational preschool, kindergarten and grade school worksheets for children.

science.nationalgeographic.com

Find answers to frequently asked questions about National Geographic Expeditions and Journeys, including policies, procedures, pricing and more.

universetoday.com

With new technologies comes new discoveries. Or so Spider Man’s Uncle Ben might have said if he was an astronomer. Or a scientist more generally - but in astronomy that saying is more true than many other disciplines, as many discoveries are entirely dependent on the technology - the telescope, imager, or processing algorithm, used to collect data on them. A new piece of technology, the Nancy Grace Roman Space Telescope, is exciting scientists enough that they are even starting to predict what kind of discoveries it might make. One such type of discovery, described in a pre-print paper on arXiv by Vito Saggese of the Italian National Institute for Astrophysics and his co-authors on the Roman Galactic Exoplanet Survey Project Infrastructure Team, is the discovery of many more multiplantery exoplanet systems an astronomical phenomena Roman is well placed to detect - microlensing.

mnemonic-device.com

get ready for memory fun at mnemonic-device.com! discover over 500 free & cool memory tricks that make learning and homework a breeze. click here to remember like a champ and have fun while you learn!