Jack Ryan

Science journalist at the ABC in Australia.

Naztronomy

Enthusiastic amateur astronomer and astrophotographer, runs a video channel all about astrophotography and space.

SETI Guppe Group

Discussion group about the search for extraterrestrial intelligence. (Click here ⧉ for more info on how to use Fediverse groups.)

Fediverse address:
@seti@a.gup.pe

MPS Göttingen (Max Planck Institute for Solar System Research)

Research establishment in Göttingen, Germany which studies all the bodies that make up our solar system including the Sun, the planets, the asteroids etc. The Institute develops scientific instruments that are sent into space on ESA and NASA missions.

Fediverse address (in English & German):
@mpsgoettingen@astrodon.social

Deutsche Zentrum für Luft- und Raumfahrt / German Aerospace Centre

German government centre for aerospace, energy and transportation research, and effectively the German space agency.

Fediverse address (main account, in German):
@DLR@social.bund.de

Fediverse address (alternate account, in German):
@dlr_next@social.bund.de

Professor Sam Lawler

Professor of astronomy at the University of Regina in Saskatchewan, Canada. Campaigner for dark skies and regulation of reflective satellites. They are also a farmer, and regularly post updates on their farm’s animals.

Fediverse address:
@sundogplanets@mastodon.social

Thomas Connor

Astrophysicist at Harvard and the Smithsonian, currently working on NASA’s Chandra x-ray observatory.

Fediverse address:
@thomasconnor@mstdn.social

Westport Observatory

Non-profit community observatory in Connecticut USA, run by volunteers from the Westport Astronomical Society.

Fediverse address:
@WestportObservatory@vmst.io

Leo Burtscher

Staff astronomer at the observatory in Leiden University in the Netherlands, studying the nuclear regions of active galaxies. Also co-founder of Astronomers For Planet Earth, a grassroots pressure group which campaigns to stop global warming.

Fediverse address (in English and German):
@leo@mastodon.green

Bits of Pluto

Bot posting random photos of the surface of Pluto, as taken by the New Horizons probe.

Fediverse address:
@bitsofpluto@mas.to

ASTRON

Netherlands Institute for Radio Astronomy, operating the Westerbork Synthesis Radio Telescope (WSRT), the Low-Frequency Array (LOFAR) and building the Square Kilometre Array (SKA).

Fediverse address:
@astron@mastodon.nl

Stephen Webb

Physicist and writer, author of “Where is Everybody?”, “Measuring the Universe”, “Around the World in 80 Ways” etc. Interested in space, astronomy and the Fermi Paradox, member of the UK SETI Research Network.

Fediverse address:
@stephenwebb@astrodon.social

65dBnoise

Engineer who posts lots of info and photos about space missions, particularly exploration of the surface of Mars.

Fediverse address:
@65dBnoise@mastodon.social

Anthony Horton

Instrument scientist at the Australian Astronomical Observatory in Sydney, and is working on the international MAVIS project. Horton posts particularly about telescopes and observatories themselves, including lots of photos.

Fediverse address:
@spacelizard@aus.social

Jason Nishiyama

University professor and research astronomer who posts about stars, related phenomena and the telescopes used to observe them.

Fediverse address:
@evilscientistca@mstdn.ca

Alan Boyle

Blogger and podcaster about science news on Cosmic Log and Fiction Science. Science journalist for GeekWire and Universe Today, formerly at NBCNews.com. Author of “The Case for Pluto”.

Fediverse address:
@alanboyle@mastodon.social

SETI Institute

Non-profit research organisation founded in 1984, looking for life elsewhere in the universe, studying the origin of known life, and informing the general public about these topics. Based in California USA.

Fediverse address:
@setiinstitute@mastodon.social

Astrobin Image Of The Day

Bot posting image of the day from astrophotography site Astrobin.

Fediverse address:
@astrobin_iotd@fedi.stfn.pl

Tim Lichtenberg

Planetary Scientist and Assistant Professor at the Kapteyn Astronomical Institute, University of Groningen in the Netherlands. Investigates atmospheric formation and the deep interiors of rocky exoplanets.

Fediverse address:
@timlichtenberg@fediscience.org

Stella-Luna Observatory

Private observatory under construction in Medina, Ohio, USA. Project leader previously operated Stephens Memorial Observatory at Hiram College, doing public astronomy and outreach.

Fediverse address:
@StellaLunaObs@mastodon.online

Perseverance Image Bot

Unofficial bot posting latest raw images taken on the surface of Mars by NASA’s Perseverance mission.

Fediverse address:
@PersevereImgBot@mastodon.social

Mark McCaughrean

Senior Advisor for Science and Exploration at the European Space Agency, member of the JWST Science Working Group and co-founder of Space Rocks (events that mix together people from entertainment and space exploration).

Fediverse address:
@markmccaughrean@mastodon.social

Reflactor

Telescope and astrophotography enthusiast, sci-fi author, software developer and wind tunnel engineer. Runs a video channel all about telescopes including buying, using, repairing etc.

Fediverse address:
@jjdreese@c.im

Astronomy Guppe Group

Discussion group about astronomy. (Click here ⧉ for more info on how to use Fediverse groups.)

Fediverse address:
@astronomy@a.gup.pe

Mount Burnett Observatory

Community astronomical observatory in the Dandenong Ranges in Victoria, Australia. Originally built in 1976 for Monash University, now run as a community project.

Fediverse address:
@mbo@astrodon.social

Danielle Rose

Watercolour artist and illustrator mainly focusing on landscapes and spaceflight. Also interested in geology and gems.

Fediverse address:
@manyfaceted@mstdn.social

Mars Relay Network Status

Unofficial bot posting latest updates from NASA’s Mars Relay Network.

Fediverse address:
@mrn_status@bot.country

Andrea Luck

Processes photos taken by spacecraft to make them clearer and more spectacular, and uses free open source software to do so.

Fediverse address:
@andrealuck@fosstodon.org

Paul Hammond

Posting extensively about the exploration of the surface of Mars by NASA and other space agencies.

Fediverse address:
@PaulHammond51@fosstodon.org

Eamonn Kerins

Astrophysicist and senior lecturer at the Jodrell Bank Centre for Astrophysics, and part of the Department of Physics and Astronomy at the University of Manchester. Hunts for exoplanets.

Fediverse address:
@eamonn_kerins@astrodon.social

Holly

NASA engineer working on fuel cells for upcoming lunar missions, formerly shuttle flight controller.

Fediverse address:
@absolutspacegrl@mastodon.social

Rob Tilsley

Astrophotographer and space enthusiast who takes astonishingly detailed photos from his backyard telescope.

Fediverse address:
@stargazerrob@mastodon.online

The Spaceshipper

Account devoted to fiction set in space. Shares concept art, photos, behind the scenes info and other material from space films, TV, books, games etc.

Fediverse address:
@TheSpaceshipper@socel.net

Scott Listfield

Artist creating striking oil paintings in a pop art style featuring pop culture, astronauts, dinosaurs and social commentary.

Fediverse address:
@scottlistfield@mastodon.social

Tom Montgomery

Engineer and photographer who posts about space and especially the exploration of Mars.

Fediverse address:
@tom30519@fosstodon.org

Weird Satellite

Bot posting very slightly tongue-in-cheek analysis of spy satellite photos.

Fediverse address:
@weirdsatellite@mastodon.art

Dr Greg Dubos

Systems engineer at NASA JPL, working on Europa Clipper probe to Jupiter’s moon Europa, Perseverance and Curiosity rovers on Mars.

Fediverse address:
@astroptere@masto.ai

Amateur Radio on the International Space Station (ARISS)

Project helping students talk to astronauts on the International Space Station via amateur radio equipment, hopefully inspiring them to pursue a career in STEM subjects. There are also repeaters for ham radio fans to take part.

Fediverse address:
@ARISS_Intl@mastodon.hams.social

Dr Jürgen Knödlseder

Astrophysicist working on gamma-ray astronomy at IRAP (CNRS) in Toulouse, France. Also interested in the impact of scientific research on the environment.

Fediverse address (in English, French, German):
@jknodlseder@astrodon.social

Ronald Drimmel

American research astronomer at the Italian National Institute of Astrophysics, currently mapping the Milky Way.

Fediverse address:
@rdrimmel@mstdn.social

Kevin Gill

Engineer and martian photographer at NASA’s Jet Propulsion Laboratory. Also processes images taken by space probes from NASA and other space agencies.

Fediverse address:
@kevinmgill@deepspace.social

Astronomy Picture of the Day

Unofficial feed of NASA’s popular service highlighting interesting pictures from space.

Fediverse address:
@apod@reentry.codl.fr

John F. Wu

Assistant Astronomer the Space Telescope Science Institute, Associate Research Scientist at John Hopkins University, based in the United States. Posts mainly about astronomy, science and machine learning.

Fediverse address:
@jwuphysics@astrodon.social

Vicky Paints Space

Creating beautiful paintings and other works of art inspired by space subjects, such as galaxies, nebulae, moons etc.

Fediverse address:
@VickyPaintsSpace@mastodon.art

Space Guppe Group

Discussions of topics related to space, including research, spacetravel etc. (Click here ⧉ for more info on using Fediverse discussion groups.)

Fediverse address:
@space@a.gup.pe

Space.com

News site about space exploration, astronomy and related topics. The site is based in the UK and US, and was founded in 1999.

Fediverse address:
@Spacecom@flipboard.com

Dr Miguel Montargès

Astrophysicist at LESIA, a department of the Paris Observatory in France. Studies cool evolved stars at high angular resolution using adaptive optics and interferometry.

Fediverse address:
@mmontarges@mastodon.obspm.fr

Mars Guppe Group

Discussion group about the planet Mars and the expeditions exploring it. (Click here ⧉ for more info about how to use Fediverse groups.)

Fediverse address:
@mars@a.gup.pe

Alan E Baker

Systems engineer and space artist, creates CGI spaceships from alternate histories and famous fictional settings.

Fediverse address:
@AEBdigital@spacey.space

Kelly Lepo

Astronomer, science communicator, Education and Outreach Scientist at the Space Telescope Science Institute, home of the science and missions operations for JWST.

Fediverse address:
@kellylepo@astrodon.social

Enrique Boeneker

Amateur astronomer and astrophotographer, member of the AAVSO organisation which coordinates observations by amateur astronomers.

Fediverse address:
@CosmoSidewalk@astrodon.social

Mikko Tuomi

Astronomer at Helsinki University in Finland, interested in exoplanets, planetary systems, stellar activity, astrobiology and more. Has discovered dozens of planets including Proxima B, a potentially habitable planet orbiting our nearest neighbouring star Proxima Centauri.

Fediverse address:
@mustapipa@scicomm.xyz

Professor Dr Heino Falcke

Professor of Astrophysics, author of “Licht im Dunkeln/Light in the Darkness/Licht in de duisternis”, joint winner of the 2011 Spinoza prize, 2021 Henry Draper Medal, 2023 Herschel Medal, 2023 Balzan Prize. Working on the Event Horizon Telescope project at Radboud University.

Fediverse address:
@hfalcke@mastodon.social

David Ek

Astrophotographer and retired aerospace engineer, posting spectacular images of galaxies and nebulae.

Fediverse address:
@PhotonPhanatic@astrodon.social

European Southern Observatory / ESO

Intergovernmental research organisation providing European countries with observatories and astronomy facilities in the southern hemisphere.

Fediverse address:
@esoastronomy@astrodon.social

Judy Schmidt

Creates astronomy-related pictures of stars, planets and other space stuff based on publicly released images.

Fediverse address:
@spacegeck@astrodon.social

AkaSci

Researcher posting about satellite communications, space, astronomy and related topics.

Fediverse address:
@AkaSci@fosstodon.org

Swapna Krishna

Journalist covering science, space and technology. Presents “Far Out” for the American public broadcaster PBS, and is a writer for Wired and StarTrek.com.

Fediverse address:
@skrishna@wandering.shop

Astrophysics Guppe Group

Discussion group about astrophysics. (Click here ⧉ for more info on how to use Fediverse groups.)

Fediverse address:
@astrophysics@a.gup.pe

Open Journal of Astrophysics

Peer-reviewed Diamond Open-Access journal of astrophysics, published by Maynooth Academic Publishing in Ireland.

Fediverse address:
@OJ_Astro@astrodon.social

Juan Carlos Muñoz

Astronomer and media officer at the European Southern Observatory, in Chile. The ESO is funded by European countries who wish to observe the sky from the southern hemisphere, and is based in the Chilean desert far from light pollution.

Fediverse address:
@astro_jcm@mastodon.online

Burke-Gaffney Observatory

Automated observatory at Saint Mary’s University in Nova Scotia, Canada. Observers can request images from the telescope by registering on its website.

Fediverse address:
@BGO@observatory.social

CNES (Centre National d’Études Spatiales)

Official account of the French space agency.

Fediverse address (in French):
@cnes@social.numerique.gouv.fr

Philo

Runs their own observatory and teaches astronomy at a local observatory, enthusiastic astrophotographer with many publishing credits. Currently based in Texas in the US.

Fediverse address:
@philo@astronomy.city

Dr Alexandre Santerne

Astronomer at the Laboratoire d’Astrophysique de Marseille and teaching at Aix-Marseille Univeristy. Expert on exoplanet detection and characterisation. Involved in the ESA PLATO space mission.

Fediverse address (in English and French):
@AlexSanterne@astrodon.social

BBC Sky At Night Magazine

Amateur astronomy magazine and website inspired by the popular BBC television series with Patrick Moore. Includes equipment reviews, advice on viewing the night sky, science features and astronomy news. Based in the UK, first published in 2005.

Fediverse address:
@skyatnightmag@flipboard.com

Marwella Zhang

Amateur space artist, amateur astrophotographer and astronomy enthusiast.

Fediverse address:
@marwellaspaceart@astrodon.social

Cathie LeBlanc

Space and astronomy enthusiast, astrophotographer taking pictures of stars, galaxies and nebulae.

Fediverse address:
@cathieleblanc@geekdom.social

Dr Robert Minchin

Astronomer at the National Radio Astronomy Observatory in the United States, and previously at (amongst others) the famous Arecibo in Puerto Rico, and the flying telescope SOFIA.

Fediverse address:
@Robminchin@mastodon.online

Universo Mágico

Non-profit website about astronomy, posts photos of stars, galaxies and other space phenomena. It posts in English but links to articles in Spanish.

Fediverse address:
@umplus@mastodon.online