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Theoretical calculations of stellar structure and the evolution of stars produce plots that match those from observations. This type of diagram could be called temperature-luminosity diagram, but this term is hardly ever used; when the distinction is made, this form is called the theoretical Hertzsprung–Russell diagram instead. A peculiar ...
The MOST team has reported a number of discoveries. In 2004 they reported that the star Procyon does not oscillate to the extent that had been expected, [10] although this has been disputed. [11] [12] In 2006 observations revealed a previously unknown class of variable stars, the "slowly pulsating B supergiants" (SPBsg). [13]
Mayall telescope at Kitt Peak National Observatory An assembly in Estonia to observe meteors. Observational astronomy is a division of astronomy that is concerned with recording data about the observable universe, in contrast with theoretical astronomy, which is mainly concerned with calculating the measurable implications of physical models.
The most powerful telescope to be launched into space has made history by detecting a record number of new stars in a distant galaxy. NASA's James Webb Space Telescope, history's largest and most ...
The Large Binocular Telescope at the Mount Graham International Observatory in Arizona uses two curved mirrors to gather light. An optical telescope gathers and focuses light mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct visual inspection, to make a photograph, or to collect data through electronic image sensors.
Chemically peculiar stars of spectral type Bp or Ap are appreciable magnetic radio sources, most Bp/Ap stars remain undetected, and of those reported early on as producing X-rays only few of them can be identified as probably single stars. X-ray observations offer the possibility to detect (X-ray dark) planets as they eclipse part of the corona ...
Observations showing a roughly donut-shaped cloud of cosmic dust and gas shrouding a huge black hole at the heart of a galaxy similar in size to our Milky Way are providing scientists with new ...
The James Webb Space Telescope has captured scintillating images of 19 spiral galaxies — and the millions of stars that call them home — in unprecedented detail never seen before by astronomers.