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)
https://theastronomycafe.net/
An archived recreation of Dr. Sten Odenwald's legendary 'Astronomy Cafe' website from circa 2001, once a destination where a professional astronomer answered thousands of public questions about space, the universe, and infrared astronomy. The site preserves a nostalgic snapshot of early web science outreach, featuring Dr. Odenwald's books, his 'Ask the Astronomer' feature, and philosophical explorations of concepts like 'nothing' and the Big Bang.
https://carolinabirds.org/
Created by Dick and Sandy Daniels, this site functions as a comprehensive online field guide covering over 10,000 bird species organized by genus and family, making it easy to compare related birds side by side. Entries span every major region of the world including North America, South America, Europe, Asia, Africa, and Australia, with links to additional information for each species.
http://skccgroup.com/
The Straight Key Century Club (SKCC) is a worldwide organization dedicated to CW (Morse code) enthusiasts who use traditional straight keys, bugs, and side-swiper keys on the air. With nearly 31,000 members and a rich program of sprints, awards, sked pages, and beginner resources, it is one of the largest and most active amateur radio clubs focused on traditional hand-keying.
https://thin-man.com/fog
Cloaked in Mystery is a fanlisting dedicated to fog, celebrating fans of this atmospheric weather phenomenon from 16 countries around the world. Listed with The Fanlistings Network, visitors can join, browse member codes, and declare their appreciation for one of nature's most mysterious natural occurrences.
http://sss-mag.com/eme.html
Part of the Spread Spectrum Scene (SSS Online) website, this page is a curated link directory focused on Earth-Moon-Earth (EME) moonbounce communications for ham radio operators. Visitors will find links to operator pages, equipment guides, activity loggers, and resources covering weak signal propagation, SETI, DSP, and related amateur radio topics.
https://www.qsl.net/i6ypk
I6YPK's workshop page showcases homebrew HF transceiver projects built in collaboration with I6WJB, including double and triple conversion designs covering 0-30 MHz continuous coverage. The site also features HP spectrum analyzer and frequency standard resources, making it a valuable technical reference for radio electronics builders.
http://omnicron.com/~ford/ford.html
Mike Ditto's personal homepage, created in 1993 and barely updated since, covers his life as a software engineer in Austin with interests spanning amateur radio, maps, music, skiing, and computers. A built-in Morse Code Translator and links to his blog with OpenSolaris home networking tips make it a small but charming relic of early web culture.
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://n7kom.com/
N7KOM is the personal site of a Pacific Northwest ham radio operator specializing in QRP portable operations and Summits On The Air (SOTA) activations. Visitors will find a QRP trap kit build guide, a getting-started SOTA resource, and links to a YouTube channel, stickers, and the Cascadia Radio Discord community.
http://astro.vaporia.com/start/transientastronomy.html
A detailed reference page from the astro.vaporia.com astrophysics index, covering transient astronomy and the study of short-lived astronomical phenomena such as supernovae, gamma-ray bursts, fast radio bursts, and gravitational wave events. It catalogs major sky surveys like ZTF, Pan-STARRS, and the Rubin Observatory, making it a useful entry point for anyone exploring time-domain astronomy.