A possible evolutionary history of neutron stars is delineated, ranging from star formation through supernova explosions, X-ray and pulsar stages to an eventual pulsar turnoff via spin alignment, or magnetic field decay. New is the emphasis that there should be two populations of pulsars, the ...
“It is one thing to theoretically predict dark matter, but it is another thing to experimentally observe it. Experiments on Earth are limited by the technical challenges of making sufficiently large detectors. However, neutron stars act as huge natural dark matter detectors, which have been ...
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When you look at a normal galaxy, most of the light comes from the stars in visible wavelengths and is evenly distributed throughout the galaxy. However, if you observe some galaxies, you'll see intense light coming from their nuclei. And if you look at these same galaxies in the X-ray...
We call this effect gravitational time dilation. According to Einstein's theory of general relativity, gravity is a curve in space-time and astronomers regularly observe this phenomenon when they study light moving near a sufficiently massive object. Particularly large suns, for instance, can cause ...
How do we perceive the link between the Universe in which we all live and Consciousness that we all share? What exactly binds the two together?
How do astronomers know that some stars are binary stars? Where and how do stars form? How do astronomers observe and learn about celestial objects? How are star charts used in modern astronomy? How are stars distributed in space? How do we know that pulsars are neutron stars? How are sta...
and future observatories including Roman. “Is the single kilonova we identified typical? How bright are these explosions? What types of galaxies do they occur in?” Existing telescopes can’t cover wide enough areas or observe deeply enough to find more distant examples, but that will chang...
What is the earliest time from which we observe light in the universe? Where has the gamma-ray burst been observed in the universe? Why is bigger better for astronomical telescopes? How do we know for certain that space is expanding? We see that galaxies are move away from each other but...
, astronomers can observe universe's "natural lasers," regions where highly charged electrons emit laser light as they discharge some of their energy, said Gay. These natural lasers, sometimes calledmasers, are usually observed in a special type of pulsating variable stars calledthe Mira stars....