Monday, October 20, 2025

Comet Lemmon and Comet Swan flyby Earth today | SpaceX launches 100,000th Starlink | Europe's drone incursion problems

'Fallout: New Vegas' look back | 'This Week in Space' podcast
Created for znamenski.spacecom@blogger.com | Web Version
 
October 20, 2025
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The Launchpad
 
Happy Monday Space Enthusiasts!
We have quite a few stories as the week begins, including a double comet flyby today as Comet Lemmon and Comet Swan make their nearest approach to Earth. We have the livestream link on our website. 

Other headlines are a 15 year look-back on 'Fallout: New Vegas,' SpaceX launching its 100,000th Starlink satellite and and Europe navigating drone incursions. We have all that and more for your daily read. 

Keep looking up, 
Kenna 
Content Manager, Space.com
 
Watch comets Lemmon & SWAN zoom past Earth today!
Watch comets Lemmon & SWAN zoom past Earth today!
The livestream is scheduled to start at 1:30 p.m. EDT (1730 GMT) on Oct. 20.
 
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Brian Greene to host inaugural Global Space Awards
Brian Greene to host inaugural Global Space Awards
The gala will be held on December 5, 2025, at London's Natural History Museum.
 
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Space quiz! What year was Comet Lemmon discovered?
Click here for the answer!
Vote2020
Vote2022
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Vote2025
 
 
 
 
Space Deal of the Day
 
Top star projectors for kids: Soothing night-lights
Space.com
Here are the best star projectors to enjoy a night-sky experience from the comfort of your couch.
 
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Science & Astronomy
 
How can Europe fight against incursions by drones?
How can Europe fight against incursions by drones?
There is also a risk to civilian aircraft from mid-air collisions with the drones and the potential for civilian deaths and injuries.
 
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SpaceX
 
SpaceX launches 10,000th Starlink on record flight
SpaceX launches 10,000th Starlink on record flight
"From Tintin to 10,000! Go Starlink, go Falcon, go SpaceX!"
 
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Entertainment
 
'Fallout: New Vegas' turns 15: Time to revisit Mojave
'Fallout: New Vegas' turns 15: Time to revisit Mojave
Fallout Season 2 is taking us back to New Vegas as the legendary RPG turns 15, but there are more reasons to return to the Mojave.
 
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Star Trek
 
Final frontier of trivia: a 'Star Trek' themed quiz
Final frontier of trivia: a 'Star Trek' themed quiz
This quiz will test your knowledge of 'Star Trek' ships, species, episodes, and the ideals that explore the final frontier.
 
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Today in Space
 
'This Week In Space' podcast: Episode 182: Dream lives
'This Week In Space' podcast: Episode 182: Dream lives
With NASA Astronaut Terry Hart
 
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On this day: Oct. 20, 1970: Soviet Union launches Zond
On this day: Oct. 20, 1970: Soviet Union launches Zond
On Oct. 20, 1970, the Soviet Union launched the Zond 8 spacecraft on a mission to the moon.
 
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Space photo of day: Hubble sees a 'starburst ring'
Space photo of day: Hubble sees a 'starburst ring'
Images like this from Hubble gives astronomers a front-row seat to the ongoing cycle of galactic creation.
 
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A new moon, the Orionid meteor shower and a cosmic footrace: Oct. 20 - 26

Orionid meteors brighten the sky as Mercury meets Mars on the southwestern horizon
Created for znamenski.spacecom@blogger.com | Web Version
 
October 20, 2025
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Night Sky This Week
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What's Up This Week?
 
Hello skywatchers!

Get ready for another action packed week! The beautifully dark nights surrounding this month's new moon phase will provide the perfect backdrop in which to hunt for shooting stars as the Orionid meteor shower peaks early on Oct. 21. The southwestern horizon, meanwhile, will act as the stage for a dramatic footrace between Mercury and Mars, though you'll need to be quick to spot the fleet-footed solar system pairing before they disappear from sight! The lengthening mid-October nights are also a perfect time to see the stellar dolphin of the Delphinus constellation frolic overhead through the southern night sky close to the bright star Altair, as cometary visitors brighten the sky nearby.

Here's what to watch for this week.

Clear skies,

Anthony Wood, Skywatching Writer, Space.com

 
 
A simulation of the night sky for Oct. 20 at sunset. The image shows the path of Mercury represented by a line as it passes below Mars over several nights in mid-October
(Starry Night)
Monday, Oct. 20 — Mercury Passes Mars (Evening)

The week surrounding Oct. 20 will see the planet Mercury sprint past the red light of Mars in the night sky. Look to the southwestern horizon shortly after the sun sets to find the two solar system planets separated by just a few degrees as twilight sets in.

 
Full Story: Space (10/1)
 
A simulation of the night sky for the early hours of Oct. 21, showing the location of the radiant for the Orion meteor shower close to the constellation Orion in the night sky.
(Starry Night)
Tuesday, Oct. 21 — The Orionid Meteor Show Peak Begins (Before Dawn)

The Orionid meteor shower peak begins in the early morning hours of Oct. 21, as Earth's orbit carries it through the densest region of the debris field shed by Halley's Comet. As many as 10-20 shooting stars may be seen brightening the sky during the peak, travelling away from the constellation Orion.

 
Full Story: Space (10/1)
 
A simulation of the night sky showing the moon to the lower right of the sun, close to the stars of the constellation Virgo.
Tuesday, Oct. 21 — The New Moon

The moon reaches its new moon phase at 8:25 a.m. EDT (1225 GMT) on Oct. 21, when it will be positioned between the Earth and sun in the constellation Virgo. The lunar disk is lost from sight in the daytime sky around this time, with its far side illuminated by sunlight and its nearside bathed in shadow.

Full Story: Space (10/1)
 
A smiulation of the night sky for Oct. 23 showing the crescent moon forming a line formation with Mercury and Mars above the southwestern horizon. The stars of the constellation Libra shine above, connected by a blue line.
(Starry Night)
Thursday, Oct. 23 — The Crescent Moon With Mercury and Mars (After Sunset)
Look to the southwestern horizon soon after sunset on Oct. 23 to see the slender crescent moon form a line with Mercury and Mars close to its right. You'll need a clear view of the horizon to catch the solar system formation shine in the twilight sky before it slips from sight.
Full Story: Space (10/1)
 
A simulation of the night sky for Oct. 24 showing the moon below the bright star Antares in the constellation Scorpius above the southwestern horizon.
(Starry Night)
Friday, Oct. 24 — The Moon Meets Antares (After Sunset)
The crescent moon will appear close to the red supergiant star Antares at sunset on Oct. 24. Once again you'll need a clear view of the southwestern horizon to spot the star shine with the lunar sickle amongst the stars of the constellation Scorpio before it follows the sun out of sight.
Full Story: Space (10/1)
 
A simulation of the October night sky showing the positions of the stars in the constellation Delphinus joined by a blue line.
(Starry Night)
Sunday, Oct. 26 — A Celestial Dolphin Takes To A Sea of Stars (All Night)
Sunday is a great time to spot a diamond of magnitude +4.0 stars representing a celestial dolphin swimming through the southern sky to the upper left of the bright star Altair.
Full Story: Space (10/1)
 
 
 
 
Moon Calendar
 
Space.com
Notable Moon Phase This Week: The New Moon

This month's new moon phase is set to occur at 8:25 a.m. EDT on Oct. 21, when the unlit form of the lunar disk will pass between Earth and the sun, hidden from our view in the daytime sky. The dark nights surrounding the October new moon phase are a perfect opportunity to explore faint, deep sky objects such as the Orion Nebula and Andromeda Galaxy. It's also the ideal time to hunt brilliant shooting stars from the Orionid meteor shower, the peak of which begins in the early hours of Oct. 21, when up to 10-20 meteors may be seen streaking across the night sky each hour.

Want to explore more? Check out our ultimate guide to observing the moon for tips and tools to get the most out of each phase.
Full Story: Space (2/22)
 
 
 
 
In The News
 
Space.com
How to see Comet C/2025 R2 (SWAN) shine in the October sky
Comet C/2025 R2 (SWAN) will make a close flyby of Earth on Oct. 21.
 
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Northern Lights Forecast
 
Space.com
Northern lights forecasts, alerts, and geomagnetic storm warnings - live updates
The latest aurora forecast for tonight help you make sure you're in the right place at the right time to see the northern lights.
 
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Your Amazing Astrophotos
 
Space.com
A cosmic heart bursts with light in new deep space astrophotographer portrait (photo)
The Heart Nebula shines 6,000 light-years from Earth in the constellation Cassiopeia.
 
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Astronomy Kit and Accessories
 
Space.com
Best monoculars in 2025 — lighter, smaller and cheaper than binoculars
The best monocular devices on the market offer a lightweight alternative to binoculars. Try using one this month to view the full moon.
 
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Space.com
Best star projectors 2025: The top projectors and planetariums ahead of Black Friday 2025
Here are the best star projectors to enjoy a night sky experience from the comfort of your couch. They are often reduced, so keep your eyes open.
 
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