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Good Red Friday morning RP. Today's Astronomy Picture of the Day (APOD) is another piece of art from the Hubble Space Telescope titled "RS Puppis." RS Puppis, the brightest star in the image center, is some ten times more massive than our Sun and on average 15,000 times more luminous. It is also a Cepheid variable star, a class of stars whose brightness is used to estimate distances to nearby galaxies as one of the first steps in establishing the cosmic distance scale. The changes in brightness are also seen along its surrounding nebula delayed in time, effectively a light echo. Using measurements of the time delay and angular size of the nebula, astronomers believe the distance to RS Pup to be 6,500 light-years, with a remarkably small error of plus or minus 90 light-years.
Astronomy Picture of the Day
Posted from apod.nasa.gov
NASA
Space
Science
Photography
Astronomy
Posted >1 y ago
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Good "Red" Friday Afternoon to you Maj William W. 'Bill' Price and thank you for this glorious Astronomy Picture of the Day!!! "RS Puppis"!!! I found a very interesting 26 second clip showing this Cepheid Variable (pulsing) Star and it is so impressive!!! Fantastic share, Bill!!!
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Maj Marty Hogan COL Mikel J. Burroughs SSG Byron Howard Sr Lt Col Charlie Brown LTC Stephen F. Col Carl Whicker Maj Robert Thornton CWO3 Dennis M. LTC Wayne Brandon Sgt Deborah Cornatzer PO3 Bob McCord CW5 Jack Cardwell TSgt Joe C. SFC Stephen Lucas SMSgt Lawrence McCarter Lt Col John (Jack) Christensen SP5 Mark Kuzinski SPC Douglas Bolton SPC Mark Huddleston
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Good morning Maj William W. 'Bill' Price Great photo and interesting information. Thanks for the share.
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Thank you, my friend Maj William W. 'Bill' Price for posting the NASA picture of the day for May 17, 2019 entitled "RS Puppis."
Wow, that is a wonderful picture.
Image: RS Puppis - Image Data-NASA, ESA, Hubble Legacy Archive; Processing & Copyright-Rogelio Bernal Andreo (DeepSkyColors.com)
"Explanation: Pulsating RS Puppis, the brightest star in the image center, is some ten times more massive than our Sun and on average 15,000 times more luminous. In fact, RS Pup is a Cepheid variable star, a class of stars whose brightness is used to estimate distances to nearby galaxies as one of the first steps in establishing the cosmic distance scale. As RS Pup pulsates over a period of about 40 days, its regular changes in brightness are also seen along its surrounding nebula delayed in time, effectively a light echo. Using measurements of the time delay and angular size of the nebula, the known speed of light allows astronomers to geometrically determine the distance to RS Pup to be 6,500 light-years, with a remarkably small error of plus or minus 90 light-years. An impressive achievement for stellar astronomy, the echo-measured distance also more accurately establishes the true brightness of RS Pup, and by extension other Cepheid stars, improving the knowledge of distances to galaxies beyond the Milky Way."
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FYI COL Mikel J. Burroughs LTC Orlando Illi Maj Bill Smith, Ph.D. CPT Jack Durish Capt Tom Brown CMSgt (Join to see) MSG Andrew White SFC William Farrell SGT (Join to see) Sgt Albert Castro SSgt Boyd Herrst SGT Charles H. Hawes SSG Martin Byrne PO1 William "Chip" Nagel CPT Gabe SnellLTC Greg Henning LTC Stephen Conway
Wow, that is a wonderful picture.
Image: RS Puppis - Image Data-NASA, ESA, Hubble Legacy Archive; Processing & Copyright-Rogelio Bernal Andreo (DeepSkyColors.com)
"Explanation: Pulsating RS Puppis, the brightest star in the image center, is some ten times more massive than our Sun and on average 15,000 times more luminous. In fact, RS Pup is a Cepheid variable star, a class of stars whose brightness is used to estimate distances to nearby galaxies as one of the first steps in establishing the cosmic distance scale. As RS Pup pulsates over a period of about 40 days, its regular changes in brightness are also seen along its surrounding nebula delayed in time, effectively a light echo. Using measurements of the time delay and angular size of the nebula, the known speed of light allows astronomers to geometrically determine the distance to RS Pup to be 6,500 light-years, with a remarkably small error of plus or minus 90 light-years. An impressive achievement for stellar astronomy, the echo-measured distance also more accurately establishes the true brightness of RS Pup, and by extension other Cepheid stars, improving the knowledge of distances to galaxies beyond the Milky Way."
Thank you for mentioning me, my friend Sgt (Join to see)
FYI COL Mikel J. Burroughs LTC Orlando Illi Maj Bill Smith, Ph.D. CPT Jack Durish Capt Tom Brown CMSgt (Join to see) MSG Andrew White SFC William Farrell SGT (Join to see) Sgt Albert Castro SSgt Boyd Herrst SGT Charles H. Hawes SSG Martin Byrne PO1 William "Chip" Nagel CPT Gabe SnellLTC Greg Henning LTC Stephen Conway
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