There are few things more peaceful and relaxing than a night under the stars. Through the holidays, many people head away from the bright city lights to go camping and stargazing. They revel in the dark skies, spangled with myriad stars. As a child, I loved such trips, and they helped cement my passion for ...
In the grand tapestry of the cosmos, there exists a celestial wonder that has captured the imagination of humanity for eons — the Milky Way. Spanning vast stretches of the night sky, this cosmic masterpiece is more than just a distant spiral of stars. The Milky Way is humanity’s heavenly home, a beacon of mystery ...
The night sky has always been a source of wonder and fascination for humanity. Among the celestial objects that captivate your attention, stars stand out as some of the most enchanting and mysterious. Throughout history, stars have held deep spiritual meanings across cultures and have been revered for their significance. This article will explore what ...
Red giants are dying stars in the advanced stages of stellar evolution, which have depleted the hydrogen in their cores. In this work, published in Nature Communications, a team of astronomers, mainly from Instituto de Astrofísica e Ciências do Espaço (IA), have found new evidence that red giant stars experience “glitches” — sharp structural variations — in their ...
While observing a newly-dormant galaxy using the Atacama Large Millimeter/submillimeter Array (ALMA) and the Hubble Space Telescope (HST), scientists discovered that it had stopped forming stars not because it had used up all of its gas, but because most of its star-forming fuel had been thrown out of the system as it merged with another galaxy. The ...
Over the last 25 years, astronomers have found thousands of exoplanets around stars in our galaxy, but more than 99 percent of them orbit smaller stars — from red dwarfs to stars slightly more massive than our sun, which is considered an average-sized star. Few have been discovered around even more massive stars, such as ...
An international team of astronomers has identified only the second and third examples of a rare type of star system comprising two central stars orbiting each other, known as binary stars, encompassed by a remarkable disk of gas and dust. Michael Poon, a Ph.D. student in the Faculty of Arts & Science’s David A. Dunlap Department ...
A quadruple star system discovered in 2017 and recently observed at the University of Canterbury Mt John Observatory could represent a new channel by which thermonuclear supernova explosions can occur in the Universe, according to results published in Nature Astronomy by an international team of astronomers. The rare double-binary star system HD74438 was discovered in ...
The first worlds beyond our solar system were discovered three decades ago. Since then, close to 5,000 exoplanets have been confirmed in our galaxy. Astronomers have detected another 5,000 planetary candidates — objects that might be planets but have yet to be confirmed. Now, the list of planets has shrunk by at least three. In ...
The mass of dust and bright swirls of stars in this image is the distant galaxy merger IC 2431, which lies 681 million light-years from Earth in the constellation Cancer. The NASA/ESA Hubble Space Telescope has captured what appears to be a triple galaxy merger in progress, as well as a tumultuous mixture of star ...
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