Sky & Telescope
@skyandtelescope.bsky.social
The Essential Guide to Astronomy | We provide the world's leading compendium of information about the science and hobby of astronomy.
This week Comets C/2025 A6 Lemmon and C/2025 R2 SWAN will both be passing their closest to Earth and will probably be at their brightest. Lemmon should be about 5th magnitude, SWAN about 6th. Both are in binocular range in a good sky.
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#astronomy #stargazing #comet #CometLemmon #CometSWAN
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#astronomy #stargazing #comet #CometLemmon #CometSWAN
October 17, 2025 at 1:33 PM
This week Comets C/2025 A6 Lemmon and C/2025 R2 SWAN will both be passing their closest to Earth and will probably be at their brightest. Lemmon should be about 5th magnitude, SWAN about 6th. Both are in binocular range in a good sky.
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#astronomy #stargazing #comet #CometLemmon #CometSWAN
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#astronomy #stargazing #comet #CometLemmon #CometSWAN
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Have your very own model of the Moon in your office. Explore the detailed locations of every solar eclipse until 2100! See Mars, Venus, Mercury, and so much more up close.
Grab yours before they're gone: buff.ly/8U5qawI
October 9, 2025 at 5:01 PM
Our solar system globes are back in stock!
Have your very own model of the Moon in your office. Explore the detailed locations of every solar eclipse until 2100! See Mars, Venus, Mercury, and so much more up close.
Grab yours before they're gone: buff.ly/8U5qawI
Have your very own model of the Moon in your office. Explore the detailed locations of every solar eclipse until 2100! See Mars, Venus, Mercury, and so much more up close.
Grab yours before they're gone: buff.ly/8U5qawI
Imagine experiencing a total solar eclipse in the same spot where the ancient Egyptians did! Archaeological Paths is offering an amazing VIP tour that will witness one of the longest total solar eclipses of this century from the Lost Golden City of Luxor!
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October 8, 2025 at 8:20 PM
Imagine experiencing a total solar eclipse in the same spot where the ancient Egyptians did! Archaeological Paths is offering an amazing VIP tour that will witness one of the longest total solar eclipses of this century from the Lost Golden City of Luxor!
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Already trusted by 100+ institutions in the USA (including Harvard, Brown, Berkeley, 25 community colleges, and 15 scout camps), Unistellar's connected telescopes bring the cosmos into the classroom and beyond.
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@unistellar.bsky.social
Learn more: buff.ly/94rMnzV and
@unistellar.bsky.social
October 1, 2025 at 2:42 PM
Already trusted by 100+ institutions in the USA (including Harvard, Brown, Berkeley, 25 community colleges, and 15 scout camps), Unistellar's connected telescopes bring the cosmos into the classroom and beyond.
Learn more: buff.ly/94rMnzV and
@unistellar.bsky.social
Learn more: buff.ly/94rMnzV and
@unistellar.bsky.social
The low waxing Moon passes the head of Scorpius. The best view will actually be in a darker sky than this, near the end of twilight: maybe 75 minutes after sunset. But you'll need a clear horizon in this direction.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #scorpius #moon
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #scorpius #moon
September 26, 2025 at 1:47 PM
The low waxing Moon passes the head of Scorpius. The best view will actually be in a darker sky than this, near the end of twilight: maybe 75 minutes after sunset. But you'll need a clear horizon in this direction.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #scorpius #moon
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #scorpius #moon
On these dark evenings the Perseus Double Cluster and the Andromeda Galaxy, M31, await in the northeast. They're only two fist-widths apart.
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#astronomy #stargazing #doublecluster #starcluster #galaxy #andromedagalaxy
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #doublecluster #starcluster #galaxy #andromedagalaxy
September 19, 2025 at 1:46 PM
On these dark evenings the Perseus Double Cluster and the Andromeda Galaxy, M31, await in the northeast. They're only two fist-widths apart.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #doublecluster #starcluster #galaxy #andromedagalaxy
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #doublecluster #starcluster #galaxy #andromedagalaxy
With just a one-minute setup and no technical skills required, students can explore the universe with Unistellar’s smart telescopes. And with NASA and SETI as their partners, the science behind it is as real as it gets.
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Learn more at buff.ly/94rMnzV and @unistellar.bsky.social
September 17, 2025 at 1:55 PM
With just a one-minute setup and no technical skills required, students can explore the universe with Unistellar’s smart telescopes. And with NASA and SETI as their partners, the science behind it is as real as it gets.
Learn more at buff.ly/94rMnzV and @unistellar.bsky.social
Learn more at buff.ly/94rMnzV and @unistellar.bsky.social
A surge of asteroids might have peppered the inner solar system some 800 million years ago, in a short-lived shower that left its mark — literally — on Earth and its neighbors.
skyandtelescope.org/astronomy-ne...
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#astronomy #moon #asteroids #craters
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#astronomy #moon #asteroids #craters
September 16, 2025 at 1:42 PM
A surge of asteroids might have peppered the inner solar system some 800 million years ago, in a short-lived shower that left its mark — literally — on Earth and its neighbors.
skyandtelescope.org/astronomy-ne...
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#astronomy #moon #asteroids #craters
skyandtelescope.org/astronomy-ne...
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#astronomy #moon #asteroids #craters
In eight days Saturn will be at opposition. So now's the time to carefully examine the brightness of Saturn's nearly edge-on rings — to compare with how they bright they will appear right around opposition date.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #saturn
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#astronomy #stargazing #saturn
September 12, 2025 at 5:32 PM
In eight days Saturn will be at opposition. So now's the time to carefully examine the brightness of Saturn's nearly edge-on rings — to compare with how they bright they will appear right around opposition date.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #saturn
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #saturn
See the images that won the 2025 Astronomy Photographer of the Year award.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #astrophotography
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#astronomy #stargazing #astrophotography
September 12, 2025 at 4:30 PM
See the images that won the 2025 Astronomy Photographer of the Year award.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #astrophotography
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#astronomy #stargazing #astrophotography
The LIGO gravitational-wave detector celebrates its 10th birthday with the clearest signal yet from a pair of merging black holes.
skyandtelescope.org/astronomy-ne...
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#astronomy #ligo #gravitationalwaves
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#astronomy #ligo #gravitationalwaves
September 12, 2025 at 4:16 PM
The LIGO gravitational-wave detector celebrates its 10th birthday with the clearest signal yet from a pair of merging black holes.
skyandtelescope.org/astronomy-ne...
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#astronomy #ligo #gravitationalwaves
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#astronomy #ligo #gravitationalwaves
The Perseverance has found compounds associated with life on Earth. But whether they indicate life on Mars awaits sample return.
skyandtelescope.org/astronomy-ne...
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#astronomy #mars #perseverancerover #marsrover #lifeonmars
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#astronomy #mars #perseverancerover #marsrover #lifeonmars
September 12, 2025 at 4:10 PM
The Perseverance has found compounds associated with life on Earth. But whether they indicate life on Mars awaits sample return.
skyandtelescope.org/astronomy-ne...
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#astronomy #mars #perseverancerover #marsrover #lifeonmars
skyandtelescope.org/astronomy-ne...
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#astronomy #mars #perseverancerover #marsrover #lifeonmars
S&T editors attended star parties in the past months in various locations around the country to observe with fellow stargazers.
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#astronomy #community #starparty #stargazing
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#astronomy #community #starparty #stargazing
September 12, 2025 at 3:33 PM
S&T editors attended star parties in the past months in various locations around the country to observe with fellow stargazers.
skyandtelescope.org/astronomy-ne...
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#astronomy #community #starparty #stargazing
skyandtelescope.org/astronomy-ne...
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#astronomy #community #starparty #stargazing
Already trusted by 100+ institutions in the USA (including Harvard, Brown, Berkeley, 25 community colleges, and 15 scout camps), Unistellar's connected telescopes bring the cosmos into the classroom and beyond.
Learn more: www.unistellar.com/education-pr... and @Unistellar
Learn more: www.unistellar.com/education-pr... and @Unistellar
September 9, 2025 at 2:47 PM
Already trusted by 100+ institutions in the USA (including Harvard, Brown, Berkeley, 25 community colleges, and 15 scout camps), Unistellar's connected telescopes bring the cosmos into the classroom and beyond.
Learn more: www.unistellar.com/education-pr... and @Unistellar
Learn more: www.unistellar.com/education-pr... and @Unistellar
Imagine experiencing a total solar eclipse in the same spot where the ancient Egyptians did! Archaeological Paths is offering an amazing VIP tour that will witness one of the longest total solar eclipses of this century from the Lost Golden City of Luxor!
archaeologicalpaths.com/solar-eclipse
archaeologicalpaths.com/solar-eclipse
September 8, 2025 at 8:16 PM
Imagine experiencing a total solar eclipse in the same spot where the ancient Egyptians did! Archaeological Paths is offering an amazing VIP tour that will witness one of the longest total solar eclipses of this century from the Lost Golden City of Luxor!
archaeologicalpaths.com/solar-eclipse
archaeologicalpaths.com/solar-eclipse
The number of gravitational-wave signals, ripples in spacetime that sweep past Earth, has just doubled.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #gravitationalwaves
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#astronomy #stargazing #gravitationalwaves
September 8, 2025 at 7:28 PM
The number of gravitational-wave signals, ripples in spacetime that sweep past Earth, has just doubled.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #gravitationalwaves
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #gravitationalwaves
Is seeing the northern lights on your bucket list? With the fall equinox approaching, now is the best time to catch aurorae. Learn more and discover how you can see (and photograph) the aurorae at skyandtelescope.org/how-to-see-t....
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#astronomy #stargazing #aurora #northernlights #auroraborialis
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#astronomy #stargazing #aurora #northernlights #auroraborialis
September 8, 2025 at 7:27 PM
Is seeing the northern lights on your bucket list? With the fall equinox approaching, now is the best time to catch aurorae. Learn more and discover how you can see (and photograph) the aurorae at skyandtelescope.org/how-to-see-t....
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#astronomy #stargazing #aurora #northernlights #auroraborialis
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#astronomy #stargazing #aurora #northernlights #auroraborialis
The waxing gibbous Moon shines in the south-southeast this evening, on a line between Altair and Fomalhaut. Altair is the bright star three or four fists above the Moon.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #moon #pisces #saturn
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#astronomy #stargazing #moon #pisces #saturn
September 5, 2025 at 1:28 PM
The waxing gibbous Moon shines in the south-southeast this evening, on a line between Altair and Fomalhaut. Altair is the bright star three or four fists above the Moon.
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #moon #pisces #saturn
skyandtelescope.org/astronomy-ne...
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#astronomy #stargazing #moon #pisces #saturn
Marsquakes reveal a lumpy, viscous mantle and a large, solid inner core, with profound implications for Mars past, present, and future.
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#astronomy #mars #planetarygeology #marsquakes
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#astronomy #mars #planetarygeology #marsquakes
September 5, 2025 at 1:13 PM
Marsquakes reveal a lumpy, viscous mantle and a large, solid inner core, with profound implications for Mars past, present, and future.
skyandtelescope.org/astronomy-ne...
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#astronomy #mars #planetarygeology #marsquakes
skyandtelescope.org/astronomy-ne...
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#astronomy #mars #planetarygeology #marsquakes
Observations with the James Webb Space Telescope launched to study the new interstellar Comet 3I/ATLAS have found the comet is surprisingly rich in carbon dioxide.
skyandtelescope.org/astronomy-ne...
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#astronomy #comet #interstellarcomet #3I/ATLAS
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#astronomy #comet #interstellarcomet #3I/ATLAS
September 4, 2025 at 1:30 PM
Observations with the James Webb Space Telescope launched to study the new interstellar Comet 3I/ATLAS have found the comet is surprisingly rich in carbon dioxide.
skyandtelescope.org/astronomy-ne...
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#astronomy #comet #interstellarcomet #3I/ATLAS
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#astronomy #comet #interstellarcomet #3I/ATLAS
A promising comet could reach naked-eye brightness next month. Here’s how to track it.
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#astronomy #stargazing #comet
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#astronomy #stargazing #comet
September 3, 2025 at 8:56 PM
A promising comet could reach naked-eye brightness next month. Here’s how to track it.
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#astronomy #stargazing #comet
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#astronomy #stargazing #comet
Our home planet just got a new companion — or at least, a newfound one. Just discovered 2025 PN7 has been orbiting the Sun alongside Earth for decades, and will continue to do so for decades more.
skyandtelescope.org/astronomy-ne...
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#astronomy #earth #moon #quasimoon #2025PN7
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#astronomy #earth #moon #quasimoon #2025PN7
September 3, 2025 at 1:27 PM
Our home planet just got a new companion — or at least, a newfound one. Just discovered 2025 PN7 has been orbiting the Sun alongside Earth for decades, and will continue to do so for decades more.
skyandtelescope.org/astronomy-ne...
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#astronomy #earth #moon #quasimoon #2025PN7
skyandtelescope.org/astronomy-ne...
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#astronomy #earth #moon #quasimoon #2025PN7
Calling all schools and teachers! Unistellar’s smart telescopes make astronomy fun, accessible, and inspiring for everyone. With just a one-minute setup and no technical skills required, students can explore the universe—even from light-polluted areas.
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Learn more: buff.ly/94rMnzV
September 2, 2025 at 8:52 PM
Calling all schools and teachers! Unistellar’s smart telescopes make astronomy fun, accessible, and inspiring for everyone. With just a one-minute setup and no technical skills required, students can explore the universe—even from light-polluted areas.
Learn more: buff.ly/94rMnzV
Learn more: buff.ly/94rMnzV
This month's Sky Tour astronomy podcast is here! September’s night sky features the iconic Summer Triangle, almost directly overhead, and a newcomer to the evening sky: Saturn. Presented by @celestronuniverse.bsky.social
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#astronomy #stargazing #saturn #moon #stars #podcast
buff.ly/SrYaw8H
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#astronomy #stargazing #saturn #moon #stars #podcast
September 2, 2025 at 6:38 PM
This month's Sky Tour astronomy podcast is here! September’s night sky features the iconic Summer Triangle, almost directly overhead, and a newcomer to the evening sky: Saturn. Presented by @celestronuniverse.bsky.social
buff.ly/SrYaw8H
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#astronomy #stargazing #saturn #moon #stars #podcast
buff.ly/SrYaw8H
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#astronomy #stargazing #saturn #moon #stars #podcast
Join Lech Walesa, the Nobel Peace Prize winner, on his first-ever Grand Lecture Tour across the U.S. and Canada. Don’t miss this once-in-a-lifetime opportunity to learn from the man who made history and changed the world forever.
Register now: www.HistoryExplorer.com
Register now: www.HistoryExplorer.com
August 8, 2025 at 8:16 PM
Join Lech Walesa, the Nobel Peace Prize winner, on his first-ever Grand Lecture Tour across the U.S. and Canada. Don’t miss this once-in-a-lifetime opportunity to learn from the man who made history and changed the world forever.
Register now: www.HistoryExplorer.com
Register now: www.HistoryExplorer.com