Science & Nature
1439 sites
Subcategories:
- Astronomy & Space (396)
- Chemistry (8)
- Earth Sciences (26)
- Biology (79)
- Physics (30)
- Mathematics (59)
- Weather & Climate (104)
- Amateur Radio (682)
- Electronics (47)
http://math.ucdavis.edu/~calculus
Calculus.org is a comprehensive educational hub hosted by UC Davis, offering step-by-step calculus problems, Java applets, Maple and Mathematica animations, and sample exams for both students and instructors. The site covers differential, integral, and multivariable calculus with resources ranging from humorous beginner guides to actuarial review problems, making it a well-rounded reference for anyone tackling the subject.
https://apod.nasa.gov/apod/archivepix.html
The legendary NASA Astronomy Picture of the Day archive is a comprehensive chronological index linking to thousands of daily astronomy images spanning from 1995 to the present, each accompanied by expert explanations written by professional astronomers. Featuring entries on nebulae, planets, eclipses, star clusters, and deep-sky objects, this archive is an endlessly explorable treasure trove for anyone fascinated by the cosmos.
http://skytour.homestead.com/
Wes's astronomy hub, active since 1995, offers a rich collection of observing logs, sketch galleries, comet documentation, meteor shower reports, and essays drawn from decades of visual astronomy with a 10-inch Dobsonian telescope. Highlights include extensive Oregon Star Party trip reports spanning nearly two decades, comet scrapbooks for Hale-Bopp and Hyakutake, and thoughtful amateur astronomy essays that range from beginner telescope guides to celestial measurement explanations.
http://server1.wikisky.org/?locale=EN
WikiSky.org is an interactive online sky map that lets users explore stars, galaxies, nebulae, and constellations through a browser-based virtual telescope interface. The site supports over 15 languages and includes community features like astro photography, forums, blogs, and user-contributed star annotations.
http://coolwx.com/record
CoolWx tracks unofficial record-breaking temperatures across the globe, cataloging high and low temperature records from over 3,800 weather stations dating back to July 2010. Visitors can explore historical animations of weather patterns by region and time period, as well as ranked lists of the most prolific record-breaking days in recent climate history.
https://in-the-sky.org/
Created by Dominic Ford, In-The-Sky.org is a richly detailed astronomy portal offering real-time night sky guides, interactive planetarium tools, satellite tracking, and event calendars for celestial phenomena like eclipses, conjunctions, and meteor showers. Visitors can explore 3D solar system maps, rising and setting times for planets, deep sky object catalogs, and even printable planispheres and astrolabes, all tailored to their geographic location.
http://asnne.org/
The Astronomical Society of Northern New England (ASNNE) is an all-volunteer non-profit based in Kennebunk, Maine, founded in 1982 to promote public awareness of astronomy. Members enjoy star parties, telescope observing sessions, monthly discussions, and access to the Starfield Observatory, making it welcoming for beginners and experienced amateur astronomers alike.
http://astronomy-mall.com/Adventures.In.Deep.Space
Adventures in Deep Space is a rich amateur astronomy resource built by Steve Gottlieb and collaborators, offering challenging observing projects covering peculiar galaxies, galaxy clusters, Abell planetaries, and much more. Packed with NGC/IC notes, finder charts, observing reports from star parties, and curated catalogs, it is a go-to destination for serious deep-sky observers hunting rarely seen objects.
https://targetarea.net/
Scott Blair's personal site, active since 1997, focuses on storm chasing and severe weather photography, featuring copyrighted images of tornadoes and violent storms captured in the field. The site also honors Eric Nguyen, a fellow storm observer and meteorologist, with a link to a memorial scholarship supporting future weather scientists.
https://norwichastro.org.uk/useful-links
The Norwich Astronomical Society maintains this curated links page pointing visitors to national bodies, local clubs, observatories, and online resources for amateur astronomers in the UK. Based at Seething Observatory in Norfolk, the society offers a well-organized gateway to stargazing locations, observing programmes, and space science topics including meteorites and solar sails.