Topics
AGN Asteroids Astronomical News Astrobiology Astronomy and Space Science Atmospheric Phenomena Black Holes and Compact Objects Blazars Bursts Calendar Catalogs Comets Discoveries Distances Earth Remote Sensing Eclipses Ephemeris Systems Galaxy Gamma Rays Geophysics Impact Infra Red Magnetars Magnitude Meteors Microlensing Moons Nebulae Neutron Stars News Planets Pulsars Radio Astronomy Relativity Satellite Watch SETI Space Flight Space Physics Spectra Starcharts Stars Sun Supernovae Time Wavelengths X-rays
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Active Galaxies and AGN
- Active Galaxies Newsletter
- The International AGN Watch
- Finding Charts for AGN
- Centaurus A (all about ...)
- Blazars: see Blazars
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Asteroids
- Asteroids (Univ. of Tennesee lectures)
- Minor Planet Lists (Harvard CfA)
- Asteroid Radar Research (JPL)
- NEAR (Near Earth Asteroid Rendezvous; landed on asteroid Eros 2001)
- Closest Approaches to the Earth by Minor Planets
- Near-Earth Object Program (NEO)
- Impact: see Impact below
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Astronomical And Space News
- The Astronomer's Telegram
(for reporting and commenting on new astronomical observations) - IAU Headlines
- Space Science News
- Science @ NASA Headline News
- Hubble Space Telescope NEWS
- News in Astro!nfo (in German)
- Astronomische Informationen (Susanne Weimer)
- The Cosmic Mirror (Daniel Fischer)
- Skyweek overview of "The Cosmic Mirror" in German
- Portal to the Universe News
- The Astronomer's Telegram
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Astrobiology
- NASA Astrobiology
- Marsbugs (Astrobiology Index)
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Astronomy and Space Sciences
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Atmospheric Phenomena
- Atmospheric Optics
- Atmospheric Phenomena (Arbeitskreis Meteore e.V.)
- Karlsruher Wolkenatlas (in German)
- Aurorae
- Solar Terrestrial Dispatch
- Aurora Page (Michigan Technological University)
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Black Holes + Compact Objects
- Black Hole FAQ
- Visual Trips to Black Holes
- Spacetime Wrinkles
- Blazars (blazar research at Boston University)
- Schwarze Löcher (in German)
- Kompakte Objekte des Himmels (in German)
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Bursts (Gamma-Ray Bursts)
- GRB Online Index (GRBOX)
- Jochen Greiner's Burst Page (localized bursts)
- GRB Host Studies (GHostS - a data base for all bursts with host galaxies)
- GCN The GRB Coordinates Network (previously BACODINE)
- COMPTEL Gamma-Ray Burst Page (UNH)
- "Magnetars", Soft Gamma Repeaters & Very Strong Magnetic Fields
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Blazars
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Calendar
- Calendars (from the Explanatory Supplement to the Astronomical Almanac)
- Calendar Zone
- Sunrise, Sunset, Moonrise, Moonset, and Twilight
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Catalogs
- (Wikipedia) List of astronomical catalogues
- The NGC/IC Project A project to correctly identify the objects in the NGC and IC catalogs.
- Catalog and Atlas of Cataclysmic Variables (CV)
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Comets
- Comet Lists (Harvard CfA)
- Cometography.com (Comets; Gary Kronk)
- Comet C/1996 B2 Hyakutake (JPL)
- X-rays from Comet Hyakutake
- Impact: see Impact below
- Constellations: see Starchartsbelow
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Discoveries
- How to Report a Discovery (IAU Circular)
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Distances
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Earth Remote Sensing
- Observing the Earth (ESA)
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Eclipses
- Eclipse Home Page by Fred Espenak (NASA)
- Eclipse Photography (MrEclipse.com)
- Earth View - ECLIPSE - Network
- Solar Eclipse Paths: 1991-2030
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Ephemeris Systems
- On-line Ephemeris System for the Solar System (Solar System Dynamics; Horizon)
- XEphem
- Online-Planetarium (in German; Ephemeriden, Almanach und Beobachtungsdaten)
- Flares: see Sun below for Solar Flares
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Galaxy
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Gamma Rays
- wavelength band definition
- What is Gamma-ray Astronomy? (What is High-Energy?)
- Gamma-Ray Astronomy (level 1)
- Gamma-Ray Astronomy (level 2)
- Compton Gamma Ray Observatory (CGRO)
- High-Energy Astrophysics at MPE
- Gamma Ray Bursts (GRB): see Topic Bursts
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Geophysics
- European Geosciences Union
- National Geophysical Data Center (NGDC) (USA)
- International GNSS Service from JPL
- Space Weather Prediction Center (solar and geophysical data; NOAA)
- Space Weather (solar and geophysical data)
- further Solar-Terrestrial topics : see Sun
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Impact of Objects
- Earth Impact Database
- Meteorite Impacts (Univ. of Tennesee lectures; including a video of the Peekskill fireball!)
- Solar System Collisions
- Asteroid and Comet Impact Hazards
- The Torino Scale
- Terrestrial Impact Craters (LPL)
- Tunguska Impact
- Asteroid and Comet Impact Hazards (NASA)
- B612 Foundation (Significantly alter the orbit of an asteroid in a controlled manner by 2015)
- Spacewatch Project
- The Spaceguard Foundation
- European Asteroid Research Node (DLR)
- Lowell Observatory Near-Earth Object Search (LONEOS)
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Infra Red
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Magnetars
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Magnitude
- Standard Photometric Systems
(M.S. Bessel, Annu. Rev. Astron. Astrophys. 2005. 43:293�336) - Astronomical Magnitude Systems
(Definitions of astronomical magnitude systems; Conversion from AB magnitudes to Johnson magnitudes; Photon Flux; Filter Transformations; Night Sky Brightnesses)
- Standard Photometric Systems
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Meteors ( + Fireballs)
- Meteors and Meteorites (Univ. of Tennesee lectures)
- The International Meteor Organization
- Arbeitskreis Meteore in der VdS (in German)
- Impact: see Impact above
- Minor Planets see Asteroids
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Microlensing
- The MACHO Project (MAssive Compact Halo Objects)
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Moons
- Monde unseres Sonnensystems (in German)
Earth Moon- Inconstant Moon - everything about the Moon
- The Hitchhiker's Guide to the Moon
(A guide to telescopic observations of the Moon) - Complete Sun and Moon Data for One Day (USNO, USA)
- Appearance of the moon during one lunation
(phase, size, viewing angle; with animation) - The Moon
- The Totally Lunar Page
- The Names of the Full Moons
- Blue Moon (D. Harper, L.M. Stockman)
- Blue Moon (Sky and Telescope)
- "Mondatlas" Informationen rund um den Mond (in German)
- Virtual Moon Atlas (software for download)
- Exploring the Apollo Landing Sites
- Moon Maps by Google with lots of details!
- Lunar and Planetary Institute
- Lunar Photo of the Day (LPOD)
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Nebulae
- The Web Nebulae (information and pictures)
- Planetary nebula Hen 3-1357 / Stingray (youngest planetary nebula)
- The Web Nebulae (information and pictures)
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Neutron Stars
- News: see Astronomical News
- Novae: see Supernovae
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Planets (Solar System)
- Solar System Exploration (NASA)
- Views of the Solar System
- The Nine (8) Planets (and moons etc.)
- Solar System Browser
- Planetary Data System (PDS) home page (USA)
- Planetary Names
- Lunar and Planetary Institute
- Plot of the Inner Solar System
- Solar System Dynamics (SSD) home page (USA)
- Planetary Photojournal (NASA; mirror at DLR)
- Regional Planetary Image Facility (NASA/DLR)
- NSSDC's Planetary Page (National Space Science Data Center, USA)
- Welcome to the Planets
(Solar System bodies and the spacecrafts that visited them) - Mercury (Mariner 10 images)
- Near Earth Asteroid Rendezvouz (NEAR)
- The Face of Venus (FOV)
- Mars Exploration Program (NASA)
- Mars Maps by Google with lots of details!
- Ganymede Fact Sheet
- Search for Extrasolar Planets
- Extrasolar Planets Encyclopaedia
- New Worlds Atlas (JPL)
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Pulsars
- Pulsar Tutorial
- RGO leaflet 'Pulsars'
- Pulsare (Lexikon der Astronomie; in German))
- Binary X-ray Pulsars in the SMC
- European Pulsar Network Data Archve (Jodrell Bank Observatory)
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Radio Astronomy
- wavelength band definition
- What is Radio Astronomy?
- Radio Astronomy for Scientists, Teachers, and Students
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Relativity
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Satellite Watch
- Satellite Visibility (Heavens Above)
- Satellite Tracker
(works great for locations in the U.S., but at least in Germany the list of selectable towns is a mess!)
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Search for Extraterrestrial Intelligence
- SETI (radio search)
- Optical-SETI
- Solar System: see Planets
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Space Flight
- Encyclopedia Astronautica
- The Internet Encyclopedia of Science
Satellites and Space Probes - Sven's Space Place spaceflight history and more
- Arianespace
- Basics of Space Flight (JPL)
- NASA Photo Gallery: Human Space Flight
- NASA Photo Galleries
- Publishers Photo Corner (NASA, excellent photos)
- The Space Review
Online publication devoted to in-depth articles, commentary, and reviews regarding all aspects of space exploration. - SpaceDaily
your internet space portal - Kennedy Space Center (KSC)
- (Current) Shuttle Mission Homepage (NASA)
- Past Space Missions (NASA)
- Florida Today Space News
- Space Missions and Launches (SPACE.com )
- History of space flight: see section in History of AstR.
- International Space Station (ISS)
- International Space Station Viewing (not only ISS)
- International Space Station
- International Space Station Report (Florida Today / Space Online)
- Fachinformationsdienst zur Nutzung der ISS (DLR; in German)
- TDRSS : Tracking and Data Relay Satellite System
- Deep Space Network (DSN)
- Russian Space Web
(News & History of Astronautics in the Former USSR) - Deep Space 1 (DS1, new technology mission)
- Glenn Research Center (was: Warp Drive, When?)
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Space Physics
- Space Physics Textbook
- Space Plasma Physics (Southwest Research Institute)
- WWW Space Physics Resources
- Space Physics Links (University of Washington)
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Spectra
- Astronomical Spectroscopy
- Stellar Spectral Types: OBAFGKM (APOD 2004-04-18)
(Original website at NOAO) - A Digital Spectral Classification Atlas
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Starcharts etc.
- Wikisky (interactive sky)
- Actual monthly starchart for northern and southern hemisphere (pdf)
- Interactive skychart (Sky & Telescope, USA; needs registration; date selectable, very good!)
- Aktuelle Himmelsvorschau (in German)
- "dehbare" Sternkarte
- Earth and Moon Viewer
- Constellations: myths and maps (Hawaiian Astronomical Society)
- Constellations
- Sky Charts (free astronomical software for download)
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Stars etc.
- Star Formation Newsletter (galactic SF only)
- Variable Stars
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Sun
- SONNEonline (Fachgruppe Sonne der VdS; Germany)
- Big Bear Solar Observatory (USA)
- Stanford Solar Center
- Solar Data Analysis Center : (SDAC); NASA
- Current Solar Images
- Sunspot Index Data Center
- Global (Sun) Oscillation Network Group (GONG)
- Solar Oscillations Investigation : (SOI); Stanford, USA
- Servers of interest to the Solar-Terrestrial Physics Community
- Solar News - Electronic Newsletter of the Solar Physics Division of the AAS
- SolarMail (Stanford, USA)
- High Energy Solar Flares (CGRO, UNH)
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Supernovae , Novae
- CfA Supernova Group webpages (Harvard-Smithsonian Center for Astrophysics )
- List of Recent Supernovae (Harvard-Smithsonian Center for Astrophysics )
- CBAT Possible-Supernovae Page (Harvard-Smithsonian Center for Astrophysics )
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Time
- Time Service Department
U.S. Naval Observatory (USNO)- Local Apparent Sidereal Time (at time of input)
- Modified Julian Day (MJD)
- Truncated Julian Day (TJD)
- Systems of Time
incl. facility to calculate current MJD
- Julian Day, Sidereal Time (date and longitude as input)
- Julian Date Calculator
- International Date Line (History)
- World Time Zones
- Daylight Saving Time
- Time Service Department
- Variable stars see: Stars etc.
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Wavelength Regions
- Definition of wavelength regions
- Spectrum (jpg)
- Spektrum (jpg)
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X Rays
- wavelength band definition
- What is X-ray Astronomy? (What is High-Energy?)
- High-Energy Astrophysics at MPE