Ranked #1
A Tour of NGC 5813
A Tour of NGC 5813
Galaxy groups are families of galaxies that are bound together by gravity. They are very similar to their larger cousins... Read more
6 Jul 2015
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Ranked #2
Space Scoop: The Space Olympics
Space Scoop: The Space Olympics
Most stars are like long-distance marathon runners, as they are constantly moving in space throughout their lifetimes.
27 Feb 2014
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Ranked #3
The AstrOlympics Project: SPEED
The AstrOlympics Project: SPEED
By converting speeds from common experiences into meters per second, we can use this as a reference point for exploring ... Read more
23 Jun 2016
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Ranked #4
Spirals in Nature
Spirals in Nature
Looking at a hurricane from this point of view, we can see that the storm is, in fact, a giant spiral shape.
7 Nov 2012
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Ranked #5
Abell 383 in 60 Seconds
Abell 383 in 60 Seconds
Dark matter is mysterious. We know that it is invisible material that does not emit or absorb any type of light, but we... Read more
14 Mar 2012
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Ranked #6
A Tour of Dual Black Holes
A Tour of Dual Black Holes
Astronomers have found evidence for five dual supermassive black holes in the centers of galaxies, each containing milli... Read more
5 Oct 2017
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Ranked #7
A Tour of the Galactic Center Visualization
A Tour of the Galactic Center Visualization
A new visualization provides viewers with an immersive, 360-degree, ultra-high-definition view of the center of our Gala... Read more
21 Mar 2019
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Ranked #8
A Tour of a Positive Feedback Black Hole
A Tour of a Positive Feedback Black Hole
Astronomers have uncovered a black hole that may have sparked the birth of stars over a phenomenal distance of more than... Read more
26 Nov 2019
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Ranked #9
A Tour of a New Signal for a Neutron Star Collision Discovered
A Tour of a New Signal for a Neutron Star Collision Discovered
A bright blast of X-rays from a source in a distant galaxy has led astronomers to a fascinating discovery.
16 Apr 2019
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Ranked #10
A Tour of the Fornax Cluster
A Tour of the Fornax Cluster
Scientists have found evidence that pairs of stars have been kicked out of their host galaxies.
28 May 2019
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Ranked #11
Space Scoop: Collecting Clues to a Cosmic Crime
Space Scoop: Collecting Clues to a Cosmic Crime
The galaxy is called ESO 137-001 and in reality it is hidden from our view by a thick fog of space dust.
2 Jun 2014
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Ranked #12
A Tour of R Aquarii
A Tour of R Aquarii
In biology, "symbiosis" refers to two organisms that live close to and interact with one another. Astronomers have long ... Read more
7 Jun 2017
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Ranked #13
CID 1711 and CID 3083 in 60 Seconds
CID 1711 and CID 3083 in 60 Seconds
Astronomers have recently completed a large survey of the sky using some of the powerful telescopes both on the ground a... Read more
26 Oct 2011
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Ranked #14
SGR 0418+5729 in 60 Seconds
SGR 0418+5729 in 60 Seconds
A magnetar is a type of neutron star that occasionally generates bursts of X-rays.
23 May 2013
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Ranked #15
Abell 2744 in 60 Seconds
Abell 2744 in 60 Seconds
One of the most complicated and dramatic collisions ever seen between galaxy clusters is captured in this new composite ... Read more
23 Jun 2011
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Ranked #16
NGC 1232 in 60 Seconds
NGC 1232 in 60 Seconds
The hot gas cloud is likely caused by a collision between a dwarf galaxy and a much larger galaxy called NGC 1232.
16 Aug 2013
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Ranked #17
Tour of NGC 2207
Tour of NGC 2207
When galaxies get together, there is also the chance of a spectacular light show.
16 Dec 2014
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Ranked #18
A Tour of CL J1001
A Tour of CL J1001
Galaxy clusters are incredibly important objects in the Universe since they are the largest objects in the Universe held... Read more
31 Aug 2016
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Ranked #19
Chandra Sketches: Highlights of Light
Chandra Sketches: Highlights of Light
Light comes in different forms. The light that we see with our eyes is just a fraction of all light.
24 Sep 2015
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Ranked #20
Chandra X-ray Observatory Celebrates 15th Anniversary
Chandra X-ray Observatory Celebrates 15th Anniversary
To celebrate the 15th anniversary of Chandra X-ray Observatory, we have released four new images of supernova remnants.
8 Aug 2014
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