In the past decade, the study of exoplanets has grown by leaps and bounds. At present, a total of 4,201 planets have been confirmed beyond the Solar System and another 5,481 candidates await confirmation. In the midst of all this, M-type red dwarf stars have become a focus of exoplanet research because they appear to be the most likely place where rocky (aka. Earth-like) planets can be found orbiting within the star’s habitable zone (HZ).
However, that does not mean that red dwarf stars are good candidates for hosting habitable planets. Take GJ 887, for example, one of the brightest M stars in the sky that has a system of two (possibly three) planets. In the past, this star was believed to be calm and stable, but new research by astronomers from Arizona State University has shown that GJ 887 might not be so calm as previously thought.
Continue reading “Astronomers Thought They’d Found a Red Dwarf That Wasn’t Hostile to its Habitable Zone Planets. They Were Wrong”
This summer we were (finally) treated to a spectacular, naked-eye comet, C/2020 F3 NEOWISE. And while seeing it with our own eyes was a joy, it was incredible to see the varied photos of NEOWISE taken by people around the world, showing the comet’s long gossamer tails, filled with detail and color. (See our gallery of images here.)
Now, the Hubble Space Telescope has released a high-resolution image of NEOWISE. However, it might not be the view you may have expected.
Continue reading “Everyone Took Pictures of Comet NEOWISE, Including Hubble”
If you want an iconic picture of the planet Saturn, it doesn’t get any better than this. The latest picture from the Hubble Space Telescope shows a spectacular view of the ringed giant, taken on July 4, 2020. This shows a “summertime” view of Saturn’s northern hemisphere.
Continue reading “Hubble Shows Saturn in the Middle of its Summer”
The Hubble Space Telescope has the knack for finding every size and shape of galaxy imaginable – from small, medium to large, all the way up to that funky size of absolute units.
Continue reading “NGC 2275: An Absolute Unit of Galactic Flocculence”
Planetary nebulae are astronomy’s gateway drug. Their eye-catching forms make us wonder what process created them, and what else is going on up there in the night sky. They’re some of the most beautiful, ephemeral looking objects in all of nature.
The Hubble Space Telescope is responsible for many of our most gorgeous images of planetary nebulae. But the images are more than just engrossing eye candy. They’re documentation of a complex process that plays out over tens of thousands of years, all across the Universe.
And they’re a death knell for the star that dwells within.
Continue reading “New Hubble Photos of Planetary Nebulae”
Meet NGC 2608, a barred spiral galaxy about 93 million light years away, in the constellation Cancer. Also called Arp 12, it’s about 62,000 light years across, smaller than the Milky Way by a fair margin. The Hubble Space Telescope captured this image with its Wide-Field Camera 3 (WFC3).
Continue reading “Barred Spiral Galaxy NGC 2608, Surrounded by Many Many Other Galaxies”
The Hubble Space Telescope has delivered another outstanding image. This one is of NGC 6441, a massive globular cluster in the constellation Scorpius. It’s one of the most massive ones in the Milky Way, and the stars in it have a combined mass of 1.6 million solar masses.
Continue reading “Hubble Photo of Globular Cluster NGC 6441, One of the Most Massive in the Milky Way”
Astronomers don’t know exactly when the first stars formed in the Universe because they haven’t been observed yet. And now, new observations from the Hubble Space Telescope suggest the first stars and galaxies may have formed even earlier than previously estimated.
Why? We *still* haven’t seen them, even with the best telescope we’ve got, pushed to its limits.
Continue reading “Hubble Looked as Far Back in Time as it Could, and Still Couldn’t See the First Generation of Stars in the Universe”
NGC 3895 is a barred spiral galaxy in the Ursa Major constellation. It’s about 145 million light years away from our home, the Milky Way, and its diameter is about 45,000 light years. William Herschel discovered it way back in 1790.
Now the Hubble Space Telescope has given us another gorgeous image of it. Thanks Hubble!
Continue reading “Barred Spiral NGC 3895 Captured by Hubble”
In these days of social distancing, it appears this beautiful little galaxy is leading by example, sitting all by itself in the middle of a cosmic void.
KK 246, also known as ESO 461-036, is a dwarf irregular galaxy, and ESA aptly described this picture as looking like “glitter spilled across a black velvet sheet.”
But the serene view can be deceiving.
Continue reading “This Dwarf Galaxy is all by Itself”