Cambridge, MA – The Perseus spiral arm – the nearest spiral arm in the Milky Way outside the Sun’s orbit – lies only half as far from Earth as some previous studies had suggested. An international ...
Astronomers directly measured the distance to a region on the far side of our Milky Way Galaxy, past the Galaxy's center. Bill Saxton, NRAO/AUI/NSF; Robert Hurt, NASA Using a 180-year-old technique ...
One of the questions I am sometimes asked is, "How do astronomers know how far away a star or a distant galaxy happens to be from Earth?" In our sky this week, there are three stars that have been ...
In 1838, Friedrich Wilhelm Bessel won the race to measure the first distance to a star other than our Sun via the trigonometric parallax—setting the first scale of the universe. Astronomers from the U ...
The most accurate catalogue of the distances to more than 100,000 stars has just been released. Cambridge astronomer Dr Floor van Leeuwen has spent the past 10 years checking and recalculating data ...
Good news, everyone! We’re not intergalactic hicks after all! Turns out that our solar system is located in a large spiral branch called the Local Arm, a prominent feature of the Milky Way galaxy. Top ...
Try this experiment: extend your thumb at arm’s length and close one eye at a time. Your thumb will seem to ‘jump’ between two positions as you switch the eye that is closed. That jump is known as ...
Scientists using NASA’s Hubble Space Telescope have for the first time precisely measured the distance to one of the oldest objects in the universe, a 13.4 billion-year-old cluster of stars born ...
In 1838, Friedrich Wilhelm Bessel won the race to measure the first distance to a star other than our Sun via the trigonometric parallax—setting the first scale of the universe. Astronomers from the U ...
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