... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2015 May 31 . Supernova 1994D and the Unexpected Universe . Image Credit: High-Z Supernova Search Team , HST , NASA . Explanation: Long ago, far away, a star exploded. ... Supernova 1994D was not of interest for how different it was, but rather for how similar it was to other supernovae . ... About APOD | ...

... 2000 March 12 . Supernova 1994D and the Unexpected Universe . Credit: High-Z Supernova Search Team , HST , NASA . Explanation: Far away, long ago, a star exploded. ... Supernova 1994D was not of interest for how different it was, but rather for how similar it was to other supernovae . ... The large number and great distances to supernovae measured over the past few years have been interpreted as indicating that we live in a previously unexpected universe . ... About APOD | ...

This page is devoted to information on Supernova 1999dq in NGC 976 Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main supernova page. Information on the original web pages for many of these images can be found on the Supernova links web page. Supernova 1999dq is the 24th LOSS discovery this year. ... VSNET Light curve (requires JAVA). ... vsnet-alert 3442 ] SNe 1999dp and 1999dq . vsnet-chat 2285 ] Host galaxy of SN1999dq . ...

... We have compiled the Catalogue of extragalactic supernovae using the GCVS card catalogue. ... Doubtful (?), or rejected (-) SN 8 A1 --- RemFlag [*] The '*' indicates a remark in sn_rem.dat 10- 19 A10 --- Gal Parent galaxy designation 21- 22 I2 h RAh Right Ascension 1950 of Parent galaxy 23- 24 I2 min RAm Right Ascension 1950 (minutes) 25- 28 F4.1 s RAs Right Ascension 1950 (seconds) 29 A1 --- DE- Declination 1950 (sign) 30- 31 I2 deg DEd Declination 1950 of Parent ...

... The distance scales of the objects are matched both by comparing the first derivatives of the angular velocity determined separately from radial velocities and proper motions and by the statistical-parallax method. ... Good agreement between the inferred 0 and our calculations based on space velocities suggests that the Lindblad relation holds throughout the entire sample volume. ... Brandt and Blitz (1993) published the distances and radial velocities for a total of 206 H II-regions. ... Astron. ...