Astronomy
Solar Flare A solar flare may result in a coronal mass ejection (CME) of a billion tonnes that can travel at over 900 miles per second. These can cause spectacular auroras to appear in the night sky, and may also trigger lightning activity. In 1989 the Hydro-Quebec power grid was disrupted by a CME. A very large CME aligned directly with Earth could end civilization as we know it.
*
Newly discovered cosmic megastructure challenges theories of the universe (01.2024)
*
Astronomy seeks to answer some simple questions:
1. Where are we?
2. How did we get here?
3. Where are we going?
4. How long will that take?
5. What’s that thing over there?
*
American Association for the Advancement of Science
Big Chem, Honors Physics, Natural Philosophers, and Boomeria
Celestial Navigation (Henning Umland)
Celestial Navigation Data for Assumed Position and Time
Changing Sun, Changing Climate
Communicating Astronomy with the Public
Extrasolar Planets and Planet Formation
History of Scientific Cosmology
Human Impacts of Solar Storms and Space Weather
International Association of Geomagnetism and Aeronomy (IAGA)
International Meteor Organization
Max Plank Institute for Solar System Research
Nebraska Astronomy Applet Project
Resources for Teaching High School Astronomy
Royal Astronomical Society of Canada
Skygazing: Astronomy through the seasons
Space Telescope Science Institute
Space Weather Prediction Center
Threat to Earth from Asteroids and Comets
Voyager: The Interstellar Mission
Water Day (a.k.a. Earth Day) is Every Day
This true-color image shows North and South America as they would appear from space 35,000 km (22,000 miles) above the Earth.
*
Higher Than the Sun (Primal Scream)
*
*
*
*
*
*
EduNorth 
You must be logged in to post a comment.