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://pasnola.org/
The Pontchartrain Astronomy Society, established in 1959, is a non-professional astronomy club serving Southeast Louisiana with events, observing sites, forums, and newsletters. Members gather to discuss celestial objects, attend star parties, and access resources like Clear Sky Charts and ISS sighting schedules for the New Orleans area.
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.
http://k0bg.com/
K0BG is a comprehensive amateur radio resource run by Alan Applegate, focusing heavily on mobile ham radio installations, antenna theory, and RF bonding techniques. The site is packed with detailed technical articles, diagrams, and practical guidance that make it a go-to reference for hams interested in operating from vehicles.
https://osedax.bearblog.dev/
Grim is an ecology postgrad whose blog covers dirt, death, decay, and the weird wonders of the biological world, from freshwater antibiotic contamination to crustacean ophthalmology. Alongside the science you'll find book reviews, horror movie musings, philosophy, ethology, and hardcore music commentary, making this a refreshingly eclectic corner of the web.
http://cactus-intertie.org/
The Cactus Intertie System is a private UHF amateur radio network established in 1971, spanning large portions of the American Southwest and beyond through a web of remotely controlled base stations linked by full duplex RF. Run by Cactus Intertie, Inc., a 501(c)(3) nonprofit, the site covers membership, affiliate clubs, technical support, educational materials, and the network's extensive history across multiple states.
https://rc-astro.com/photography.php
Russell Croman's astrophotography site showcases stunning deep-sky images including nebulae, galaxies, star clusters, and solar system objects captured with professional-grade equipment. With sections organized by celestial type and additional resources on equipment and publications, this is a richly curated portfolio of night-sky photography spanning over two decades.
https://nj2bb.org/
The Battleship New Jersey Amateur Radio Station (BNJARS) is a non-profit club operating amateur radio aboard the historic USS New Jersey museum ship in the Delaware Valley area. The site covers station information, guest operator details, WWII radio restoration projects, QSL card info, and club activities tied to promoting the battleship through worldwide amateur radio contacts.
http://lmars.org/
The Lake Monroe Amateur Radio Society (LMARS) is a ham radio club serving Seminole County and Central Florida, offering members resources like repeater information, a traffic net guide, licensing support, and a newsletter archive dating back to 2009. The site connects hams through regular meetings, fox hunts, Field Day operations, and community communications events, making it a solid hub for local amateur radio enthusiasts.
https://theastronomer.tripod.com/
Tammy Plotner's astronomy site is a sprawling personal observatory journal covering years of nightly observing reports, constellation starhop guides, solar and lunar photography, aurora sightings, and deep sky sketches. With content spanning from 2001 to 2007 and sections on Messier studies, planetary transits, and star parties across Ohio and beyond, this is a genuine labor of love for backyard astronomers.
https://3830scores.com/
Created by Bruce Horn (WA7BNM), this site tracks and aggregates self-reported scores from hundreds of amateur radio contests, including ARRL DX, CQ WPX, and dozens of weekly sprint events. Operators can compare claimed scores across multiple years and calls, making it an invaluable reference for the competitive ham radio contesting community.