General [Top of Page]

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An Atlas of the Universe

Astronomy and Astrophysics at the NSSDC

Astronomical Data Center (ADC)

Site Map for the Astronomical Data Center

NASA Astrophysics Data System (ADS)

Data and Archive Centers

Canadian Astronomy Data Centre

CDS Web--WWW Resources (U of Strasbourg)

NASA's Observatorium

Star Journey--National Geographic

Hubble Data Archive

Pronunciation of constellation names and star names

The Best of the Hubble Space Telescope (SEDS)

The Hubble Heritage Project

The Messier Deep Sky Catalogue (SEDS)

Two Micron All Sky Survey--2MASS Home Page

The NGC/IC Project
-- Attempt to Correctly Identify All the Original NGC and IC Objects

The NGC on the Net (SEDS)

The Whole NGC--Star Survey Images

NASA/IPAC Extragalactic Database

Non-Messier Objects in SEDS Database

Kepler Mission--Planet Quest (JPL)(NASA)

Kepler Mission--Home Page

Stars [Top of Page]

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The Constellations and Their Stars

Constellation Photos

Constellation FAQs

Lives and Deaths of Stars

Stars--An Introduction (NASA)

Stellar Evolution and Death (NASA)

Chandra Images by Category

Normal Stars (Chandra)

Neutron Stars/X-ray Binaries (Chandra)

White Dwarfs & Planetary Nebulas (Chandra)

The Hipparchos and Tycho Catalogues (ESA)

The Munich Archive Astromaps (SEDS)

Nebulae and Novae [Top of Page]

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SEDS Nebulae Page

The Web Nebulae

Latest Supernovae

Supernovae Observed in the Milky Way

Supernovae and Supernovae Remnants

Supernova Remnant M1 in Taurus (Crab Nebula)

Milky Way Central Region

Diffuse Nebula M8 (Lagoon Nebula) in Sagittarius

Diffuse Nebula M17
-- (Omega Nebula, Swan Nebula, Horseshoe Nebula or Lobster Nebula) of Milky Way (in Sagittarius)

Diffuse Nebula M20 (Trifid Nebula) in Sagittarius

The Orion Cloud and Association

The Horsehead Nebula Region in Orion

Dark Nebula Barnard 33 in Orion (Milky Way)

Diffuse Nebula M42 (Orion Nebula) of Milky Way (in Orion)

Diffuse Nebula M43 (De Mairan's Nebula) of Milky Way (in Orion)

Diffuse Nebula M78 of Milky Way (in Orion)

Emission Nebula Sharpless 276 (Barnard's Loop) of Milky Way (in Orion)

The Rosette Nebula in Monoceros (Diffuse Nebulae 2237-9,46 and Open Cluster NGC 2244)

Planetary Nebula Pease 1 in M15 in Pegasus

Supernova 1987A in Large Magellanic Cloud in Dorado

Tarantula Nebula NGC 2070--Diffuse Nebula in Large Magellanic Cloud in Dorado

Supernova 1987A and the Tarantula Nebula (AAO Image)

American Association of Variable Star Observers

Variable Star Of The Month -- May, 2000: RS Ophiuchi

Star Clusters [Top of Page]

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SEDS Star Clusters Page

Globular Cluster M2 in Aquarius--Far from Center of Galaxy--Large and Compact

Milky Way Photo Mosaic

Milky Way Photos (APOD)

Infrared Image of the Center of the Milky Way

Sagittarius A: The Galactic Center of Our Milky Way

Milky Way Central Region

Photo of the Milky Way in Sagittarius

Image of Milky Way (Omega Nebula M17, Open Cluster M18 and Milky Way Star Cloud M24)

Open Cluster M6 (Butterfly Cluster) in Scorpius

Open Cluster M7 (Scorpion's Tail or Ptolemy's Cluster) in Scorpius

Globular Cluster M80 in Scorpius

Globular Cluster M9 in Ophiuchus

Globular Cluster M10 in Ophiuchus

Globular Cluster M12 in Ophiuchus

Globular Cluster M14 in Ophiuchus

Globular Cluster M19 in Ophiuchus--Oblate Due to Proximity to Center of Galaxy

Globular Cluster M62 in Ophiuchus--Deformed by Tidal Forces near Center of Galaxy

Globular Cluster M107 in Ophiuchus

Open Cluster M16 (Associated with Eagle Nebula) of Milky Way (in Serpens)

Open Cluster M18 in Sagittarius

Open Cluster M21 in Sagittarius

Globular Cluster M22 in Sagittarius

Open Cluster M23 in Sagittarius

Milky Way Patch M24 (Sagittarius Star Cloud, Delle Caustiche) in Sagittarius

The M24 Region in Sagittarius

Open Cluster M25 in Sagittarius

Globular Cluster M28 in Sagittarius

Globular Cluster M55 in Sagittarius

Globular Cluster M69 in Sagittarius

Globular Cluster M70 in Sagittarius--Collapsed Core

Open Cluster M11 in Scutum--Rich and Dense

Open Cluster M26 in Scutum

NGC 5139 (Omega Centauri)--The Largest Globular Cluster
-- in the Milky Way Galaxy (in Centaurus)

Globular Cluster M3 in Canes Venaciti--212 Variable Stars

Globular Cluster M5 in Serpens--105 Variable Stars

Globular Cluster M15 in Pegasus
-- perhaps the densest cluster in the Milky Way--Collapsed Core

Globular Cluster M30 in Capricornus--Collapsed Core

Globular Cluster M13 (in Hercules)

Globular Cluster M92 (in Hercules)

Globular Cluster M4 in Scorpius
-- One of the Nearest Globular Cluster at About 7000 Light Years

Globular Cluster M75 in Sagittarius
-- the Most Distant of all Galactic Messier Objects at about 60,000 Light Years
-- Far from Center of Galaxy

Globular Cluster M54 in SagDEG Dwarf Galaxy (in Sagittarius and Local Group)

Globular Cluster G1 in the Andromeda Galaxy M31 (in Andromeda)

Open Cluster 752 in the Andromeda Galaxy M31 (in Andromeda)

Galaxies [Top of Page]

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Welcome to the SEDS Homepage
-- SEDS (Students for the Exploration and Development of Space)

Groups and Clusters of Galaxies (SEDS)

Groups and Clusters of Galaxies with Messier Objects (SEDS)

The Local Group of Galaxies (SEDS)

Local Group of Galaxies with Individual Links (SEDS)

Milky Way Galaxy (SEDS)

Another Milky Way Page

Large Magellanic Cloud (Irregular Galaxy LMC)--Orbits Milky Way

Small Magellanic Cloud (Irregular Galaxy NGC 292 in Tucana)--Orbits Milky Way

Triangulum Galaxy--Spiral Galaxy M33 in Triangulum--Local Group Messier Object

Andromeda Galaxy M31 in Andromeda--Local Group Messier Object

Another Andromeda M31 Page

Elliptical Galaxy M32
-- Satellite of Andromeda Galaxy M31--Local Group Messier Object

Elliptical Galaxy M110--Satellite of Andromeda Galaxy M31--Local Group Messier Object

Andromeda I--Dwarf Spheroidal Galaxy in Andromeda--Local Group

Andromeda II--Dwarf Spheroidal Galaxy in Andromeda--Local Group

Andromeda III--Dwarf Spheroidal Galaxy in Andromeda--Local Group

Andromeda IV--Irregular Galaxy or Star Cloud in Andromeda--Local Group

Andromeda V--Dwarf Spheroidal Galaxy in Andromeda--Local Group

Andromeda VI--Dwarf Spheroidal Galaxy in Pegasus
-- Local Group--Probably a Satellite of Andromeda M31
-- Originally Named Pegasus Dwarf Spheroidal Galaxy

Andromeda VII--Dwarf Spheroidal Galaxy in Cassiopeia
-- Local Group--Originally Named Cassiopeia Dwarf Spheroidal Galaxy

Antlia Dwarf--Dwarf Spheroidal Galaxy in Antlia--Local Group

Aquarius Dwarf--Irregular Galaxy in Aquarius--Local Group

Carina Dwarf--Dwarf Spheroidal Galaxy in Carina--Local Group

Irregular Galaxy IC 10 in Cassiopeia--Outlying Member of Local Group

Dwarf Elliptical Galaxy NGC 147 in Cassiopeia--Local Group

Dwarf Spheroidal Galaxy NGC 185 in Cassiopeia--Local Group

Irregular Galaxy WLM (Wulf-Lundmark-Melotte Galaxy) in Cetus--Local Group

Cetus Dwarf in Cetus--Dwarf Speroidal Galaxy--Local Group

Irregular Galaxy IC 1613 in Cetus--Local Group

Fornax Dwarf--Dwarf Spheroidal Galaxy in Fornax--Local Group

Irregular Galaxy NGC 3109 in Hydra--Local Group

Irregular Galaxy IC 5152 in Indus--Local Group

Another IC 5152 Page

Leo I--Dwarf Elliptical Galaxy in Leo--Local Group

Regulus Galaxy or Leo 1--Dwarf Spheroidal Galaxy in Leo--Local Group

Dwarf Spheroidal Galaxy Leo II (Leo B) in Leo--Local Group

Irregular Galaxy Leo A (Leo III) in Leo--Local Group

Pegasus Dwarf--Irregular Galaxy in Pegasus--Local Group

Phoenix Dwarf--Irregular Galaxy in Phoenix--Local Group

Pisces Dwarf--Irregular Galaxy in Pisces--Local Group

Irregular Galaxy NGC 6822 in Sagittarius--Local Group

Another NGC 6822 Site

Sagittarius Dwarf Elliptical Galaxy SagDEG in Sagittarius--Local Group

Another SagDEG Page

Sagittarius Dwarf Irregular Galaxy (SagDIG) in Sagittarius--Local Group (Kowal's Object)

Sculptor Dwarf--Dwarf Spheroidal Galaxy in Scuptor--Local Group

Irregular Galaxy Sextans A in Sextans--Local Group

Irregular Galaxy Sextans B in Sextans--Local Group

Sextans Dwarf--Dwarf Spheroidal Galaxy in Sextans--Local Group

Tucana Dwarf--Dwarf Spheroidal Galaxy in Tucana--Local Group

Irregular, Elliptical or Lenticular Galaxy UGCA 86
-- in Camelopardalis--Fringe of Local Group--May be a Member of Maffei I Group

Irregular or Lenticular Galaxy UGCA 92 in Camelopardalis
-- Fringe of Local Group or in Maffei I Group

Camelopardalis A--Irregular Galaxy in Camelopardalis
-- Close to and Possibly Related to NGC 1560--Likely in Maffei 1 Group

Spiral Galaxy NGC 1560 in Camelopardalis
-- Fringe of Local Group--Likely in Maffei 1 Group

Irregular Galaxy NGC 1569 in Camelopardalis
-- Fringe of Local Group--Likely in Maffei 1 Group

Local Group Dynamics

Scuptor Group of Galaxies (South Polar Group)--Closest to the Local Group

Spiral Galaxy NGC 253 in Sculptor--Brightest Member of Scuptor Group

The M81 Group of Galaxies--Near the Local Group

Spiral Galaxy M81 in Ursa Major (Bode's Galaxy)

Irregular Galaxy M82 in Ursa Major--Part of the M81 Group (Cigar Galaxy)

Spiral Galaxy NGC 2976 in Ursa Major--Part of the M81 Group

Irregular Galaxy NGC 3077 in Ursa Major--Part of the M81 Group

Spiral Galaxy 2403 in Camelopardalis--Part of the M81 Group

Spiral Galaxy M83 in Hydra--Intermediate Between Normal and Barred
-- Brightest in the Nearby M83 Group of Galaxies at about 15 Million Light Years (Southern Pinwheel)

The Maffei 1 Group of Galaxies (IC 342 Group) -- Once a Subgroup of Local Group--Spun Away by Violent Encounter with Andromeda Galaxy M31
-- 10 Million Light Years Distant--Obscured by Dark Matter

The Virgo Cluster of Galaxies

The Virgo Cluster and the Local Cluster of Galaxies

Elliptical Galaxy M49 of Virgo Cluster (in Virgo)

Barred Spiral Galaxy M58 of Virgo Cluster (in Virgo)

Elliptical Galaxy M59 of Virgo Cluster (in Virgo)

Elliptical Galaxy M60 of Virgo Cluster (in Virgo)

Spiral Galaxy M61 of Virgo Cluster (in Virgo)

Lenticular (S0) Galaxy M84 of Virgo Cluster (in Virgo)

Lenticular (S0) Galaxy M85 of Virgo Cluster (in Coma Berenices)

Lenticular (S0) Galaxy M86 of Virgo Cluster (in Virgo)

Elliptical Galaxy M87 of Virgo Cluster (in Virgo)

Spiral Galaxy M88 of Virgo Cluster (in Coma Berenices)

Elliptical Galaxy M89 of Virgo Cluster (in Virgo)

Spiral Galaxy M90 of Virgo Cluster (in Virgo)

Barred Spiral Galaxy M91 of Virgo Cluster (in Coma Berenices)

Spiral Galaxy M98 of Virgo Cluster (in Coma Berenices)

Spiral Galaxy M99 of Virgo Cluster (in Coma Berenices)

Spiral Galaxy M100 of Virgo Cluster (in Coma Berenices)

Hubble Discovers Cepheid Variables in M100

The Leo Triplett (M66) Group of Galaxies

Spiral Galaxy M65 of Leo Triplett (M66) Group (in Leo)

Spiral Galaxy M66 of Leo Triplett (M66) Group (in Leo)

Spiral Galaxy NGC 3628 of Leo Triplett (M66) Group (in Leo)

The M96 Group of Galaxies (Leo I Group)

Barred Spiral Galaxy M95 of Leo I or M96 Group (in Leo)

Spiral Galaxy M96 of Leo I or M96 Group (in Leo)

Elliptical Galaxy M105 of Leo I or M96 Group (in Leo)

Spiral Galaxy M101 in Ursa Major--One of Largest Disk Galaxies
-- Diameter of 170,000 Light Years at Distance of 27 Million Light Years
-- Chief Member of a Group of Galaxies

Lenticular (S0) Galaxy NGC 5866 in Draco (Spindle Galaxy)
-- Largest of the NGC 5866 Group of Galaxies
-- about 40 Million Light Years Distant

Spiral Galaxy NGC 5907 in Draco (Splinter Galaxy)--in NGC 5866 Group

Southern Pinwheel--Spiral Galaxy M83 in Hydra
-- Intermediate Between Normal Spiral and Barred

Centaurus A--Peculiar Galaxy NGC 5128 in Centaurus
-- In Group with Southern Pinwheel--It is the Nearest Radio Galaxy
-- Partially Shaped by Galactic Collision--Intermediate Between Elliptical and Spiral

The M51 Group of Galaxies

Spiral Galaxy M51 in Canes Venaciti (Whirlpool Galaxy)

Irregular Galaxy NGC 5195 in Canes Venaciti--Companion of M51

Spiral Galaxy M63 in Canes Venaciti--Member of M51 Group

Spiral Galaxy M74 in Pisces--Chief Member of Small Group of Galaxies

Spiral Galaxy M77 in Cetus (Cetus A)--Chief Member of Small Group of Galaxies
-- 60 Million Light Years Distant
-- Equidistant But Opposite Direction as Virgo Cluster

Other [Top of Page]

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Radio Source Data (Astronomical Data Center)

High Energy Data (ADC)

High Energy Astrophysics Science Archive Research Center (HEASARC/NASA)

Non-Stellar and Extended Objects (ADC)

Chandra Sky Map

Brown Dwarfs (Chandra)

Black Holes (Chandra)