Latest Astronomy Stories
Hundreds of people in the eastern US recently reported seeing what is being described as three unique fireball events on Monday evening, including one which was apparently man-made.
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An unusual object located at the center of the Milky Way is most likely not a hydrogen gas cloud headed towards the galaxy’s black hole, but a pair of binary stars that had been orbiting it together before merging into a single, extremely large star.
Using the Very Large Telescope Interferometer in near-infrared light, a team of astronomers observed 92 nearby stars to probe exozodiacal light from hot dust close to their habitable zones and combined the new data with earlier observations.
For their latest discovery, Yale astronomers and the Planet Hunter program have found a low-mass, low-density planet with a punctuality problem.
An area of intense and complex magnetic fields known as an active region rotated into view on October 18, growing into the largest phenomenon of its kind in more than two decades and producing 10 significant solar flares.
On Tuesday, Nov. 4 at NASA's Langley Research Center in Hampton, Virginia, Kevin Hand from NASA's Jet Propulsion Laboratory (JPL) will present "Ocean Worlds of the Outer Solar System" at 2 p.m. in the Reid Conference Center.
The water that covers over 70 percent of the Earth formed just 14 million years after the formation of the solar system – much earlier than previously believed, according to a new study published online Friday in the journal Science.
Just in time for Halloween, the Hubble Space Telescope has detected faint ghost light emitted from stars that had been ejected from an immense collection of ancient, now dead galaxies known as Pandora’s Cluster billions of years ago.
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The prominent feature that allows for the existence of life on Earth is the Sun. Radiation from our closest star provides heat and energy to our planet, driving biological processes and providing the necessary conditions for liquid water to naturally exist. But our Sun is only but one star in this vast Universe. And as it turns out, most stars are quite different than the one that illuminates our day. For this reason, scientists have, for hundreds of years, attempted to study the other...
Image Caption: Artistic concept of a planetary system. Credit: Wikipedia/NASA/JPL-Caltech The term Astronomy encompasses a broad range of topics, including the study of stars, galaxies, and planets. In order to focus on the different areas of study, many subfields of astronomy emerge. One such area is the study of planets known, appropriately, as Planetary Astronomy. Observational Planetary Astronomy Even within the field of Planetary Astronomy, there are several divisions to...
Image Caption: The Hubble Extreme Deep Field (XDF) was completed in September 2012 and shows the farthest galaxies ever photographed by humans. Each speck of light in the photo is an individual galaxy, some of them as old as 13.2 billion years; the observable universe is estimated to contain more than 200 billion galaxies. Credit: NASA/Wikipedia What is Cosmology? I once commented to an acquaintance that I was fascinated by the field of Cosmology, and mused that if I had more time, I...
Image Caption: NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 56,000 light-years in diameter and approximately 60 million light-years distant. Credit: NASA/ESA/Wikipedia What is Astrophysics? For much of the modern age the term Astrophysics has been used synonymously with Astronomy. This interchange is so common that many textbooks even offer the two as having the same meaning. However, from a strictly historical perspective there are differences...
The Tropic of Capricorn, alternately called the Southern Tropic, is a marker of the most southerly latitude on the Earth at which the Sun can be directly overhead. This occurs at the December solstice, when the southern hemisphere is tilted towards the sun at its maximum degree. It is one of the five major circles of latitude that mark maps of the Earth. It presently lies 23 degrees 26’ 16’’ south of the Equator. Currently, the Tropic of Capricorn is drifting towards the north at...
- A transitional zone between two communities containing the characteristic species of each.