Word: dwarf
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...glad that your astronomy cover story about the first stars [Sept. 4] dealt with what we astronomers really do rather than the mere semantic debate over whether Pluto is a planet or a dwarf planet. Michael Lemonick wonderfully conveyed the feeling of using a big telescope and showed how astronomers work together observing in different parts of the spectrum to gain a complete picture of that early stage of our universe. Jay M. Pasachoff Director, Hopkins Observatory Williams College Williamstown, Massachusetts, U.S. The article on the birth of stars was a breath of fresh air at a time when...
...so glad that your astronomy cover story about the first stars [Sept. 4] dealt with what we astronomers really do rather than the mere semantic debate over whether Pluto is a planet or a dwarf planet. Michael Lemonick wonderfully conveyed the feeling of using a big telescope and showed how astronomers work together observing in different parts of the spectrum to gain a picture of that early stage of our universe...
...huge elliptical galaxies that formed later. Another hint that the merger theory is correct is that the collisions are still going on today. Astronomers can see hundreds of colliding galaxies in their telescopes, and our own Milky Way is still slowly gobbling up the half a dozen or so dwarf galaxies that surround...
...Spitzer space telescope (which operates in infrared wavelengths) and the European Space Organization's ground-based Very Large Telescope in Chile revealed the existence of a galaxy dating to about 1 billion years after the Big Bang that was far larger and more mature looking than the primordial dwarf galaxies everyone assumed they would see. "It was unexpected," admits Mark Dickinson of the National Optical Astronomy Observatory, in Tucson, Ariz., who worked on the project. "But maybe it shouldn't have been." The theorists might have things all wrong. But it could also simply be that any population will have...
...DARK AGES The death of the mega-stars triggered the formation of normal stars, creating the first recognizable dwarf galaxies. Their radiation in turn burned through the remaining shrouds of hydrogen, bringing the dark ages to a close TIME Graphic by Joe Lertola Sources: Professor Avi Loeb, Harvard University; Professor Richard Ellis, Caltech...