| SIMBAD |
ADS Strassbourg mirror ADS Harvard mirror |
Astronomical Images | NASA Photographic Database |
| IPAC 2MASS,IRAS,ISO etc. | NED | NVSS | Skyview |
| Physical reference data | Physlink Physics & Astronomy reference | Useful info dip moms, freqs, coll. rate refs. | DSS-survey |
| IR lines atoms & molecules. | Lovas recommended rest freqs. | Molecular Spectrospcopy Homepage | Wordwide Molecular Ap. Resources |
| Splatalogue database | Cologne Database for Molecular Spectroscopy | - | - |
| Online Dictionary | Another Dictionary/Thesaurus | Woordenboek | Encyclopedia | Wikipedia |
| Encyclopedia of Science | Dictionary of units | Babylon translator | - | - |
| Official US time | World Time Zones |