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New Scientist:
Known as G1.9+0.3, the remnant lies about 28,000 light years away. It was first identified as a ring-like supernova remnant in the early 1980s. Now, observations by NASA's Chandra X-ray Observatory and the Very Large Array in New Mexico have shown that the diameter of the glowing gas shell has expanded by 16 per cent over the past 22 years.
If the speed of expansion is roughly constant, then the remnant is only about 140 years old, in the Earth's time frame, making it the youngest in the Milky Way.
New Scientist:
Known as G1.9+0.3, the remnant lies about 28,000 light years away. It was first identified as a ring-like supernova remnant in the early 1980s. Now, observations by NASA's Chandra X-ray Observatory and the Very Large Array in New Mexico have shown that the diameter of the glowing gas shell has expanded by 16 per cent over the past 22 years.
If the speed of expansion is roughly constant, then the remnant is only about 140 years old, in the Earth's time frame, making it the youngest in the Milky Way.
Kuo toliau, tuo labiau stiprėja įsitikinimas, kad universaliausi visų sričių žinovai - žurnalistai vidurinėse mokyklose nesimokė. Arba aš buvau labai blogas mokinys. Gal todėl ir nesuprantu, kaip galima pamatyt 140 metų senumo supernovą, jei ji yra už 28 000 šviesmečių nuo žemės. Mano supratimu, jos amžius turėtų būti 28 000 šviesmečių + 140 metų.
REKLAMA
REKLAMA
Mūsų galaktikoje aptiktos 140 metų senumo supernovos liekanos