@tomkerss

Astronomer. Author. Chief Aurora-Chaser at Hurtigruten. Single R; double S. Ta. Books and more in link πŸ‘‡

 UK
tomkerss.com
Joined January 2009
  • Tweets1.5K
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  • Followers4.9K
163Media
If you've been enjoying the sight of the Northern Lights in the UK tonight, you may be interested in the new edition of my definitive guide to the subject, which is also currently on offer at Amazon! amazon.co.uk/Northern-Lights…
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WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2026 Oct 10 1742 UTC Valid To: 2026 Oct 10 2359 UTC Warning Conditions: Onset Noaa Scale: G3 - Greater Comment: Issue Time: 2026 Oct 10 1742 UTC bit.ly/3wVgAKH
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G1 (Minor) to G2 (Moderate) geomagnetic storms are likely on 09 Oct with the arrival of a CME that was associated with a M1.4 flare from Active Region 4549 on 06 Oct. A high chance for additional M-class flare activity from Region 4549 will persist in the coming days.
G2 (Moderate) Geomagnetic Storm Watch

ALT G2 (Moderate) Geomagnetic Storm Watch

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Tom Kerss FRAS retweeted
Astronomy Now@AstronomyNowOct 4
Here's our October #shelfie – reviewed in our latest issue! πŸ“— 𝐍𝐨𝐫𝐭𝐑𝐞𝐫𝐧 𝐋𝐒𝐠𝐑𝐭𝐬 @tomkerss πŸ“™ 𝐎𝐧 π“π’π¦πž @jimalkhalili πŸ“˜ π‰πšπ¦πžπ¬ π–πžπ›π›β€™π¬ π€π§πœπ’πžπ§π­ 𝐂𝐨𝐬𝐦𝐨𝐬 Maggie Aderin & Sarah Wild πŸ“• 𝐇𝐨𝐰 𝐭𝐨 πƒπžπ¬π’π π§ 𝐚 π”π§π’π―πžπ«π¬πž @AstroRoyalScot
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Tom Kerss FRAS retweeted
ESA Science
@esascienceSep 30
Inspector Smile is ready for science! 🫑 This is Smile’s first ultraviolet view showing an auroral substorm. With the ultraviolet camera now operational, Smile becomes the first spacecraft since 2008 to capture the full ring of northern lights around the north pole in ultraviolet light. 1/4
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Achievement unlocked! Reward: More years of fuel! We have completed Roman's first course correction so accurately that it conserved years of fuel for the mission! Learn more: go.nasa.gov/46qdvRj
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Tom Kerss FRAS retweeted
Collins Astronomy@CollinsAstroSep 10
OUT TODAY ✨ From expert @tomkerss discover the incomparable beauty of the #AuroraBorealis in this fascinating guide for aspiring and seasoned night sky observers – the perfect gift for anyone looking to explore the #NorthernLights. collins.co.uk/products/97800… #Astronomy #Space
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Tom Kerss FRAS retweeted
Collins Astronomy@CollinsAstroSep 10
Cosmic Light is out today! πŸŒˆπŸ’« See the Universe as never before with this wonderfully colourful collection of cosmic imagery, never before seen in print and demystified by experts @tomkerss and @RyanJFrench ow.ly/lSHv50ZLMcc #CosmicLight #Space #Astronomy #Science
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Shades on and batteries charging! 😎 πŸ”‹ Roman’s Solar Array Sun Shield and Lower Instrument Sun Shade have successfully deployed, powering the observatory and shading its instruments! go.nasa.gov/4gw2rqc
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Tom Kerss FRAS retweeted
Astronomy Now@AstronomyNowAug 30
Our #September #shelfie: Cosmic Light - Tom Kerss & Ryan French When the Sky Falls - Jade Angeles Fitton Telescope Eyepieces: Optical Theory & Design - Sean G. Ryan Meet Jonathan Cowie, author of Earth's Flips of State Full reviews in the new issue: sbee.link/39x486qfmn
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The Golden Age of Discovery Has Begun πŸ‡ΊπŸ‡Έ
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Tom Kerss FRAS retweeted
SpaceX
@SpaceXAug 30
Deployment of Roman confirmed
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Roman is ready for liftoff tomorrow at 7:26 a.m. EDT! The SpaceX Falcon Heavy rocket carrying NASA's Nancy Grace Roman Space Telescope stands vertical at Launch Complex 39A at Kennedy Space Center in Florida.
NASA’s Nancy Grace Roman Space Telescope, encapsulated in a protective payload fairing atop a SpaceX Falcon Heavy rocket, is seen at sunrise, Saturday, Aug. 29, 2026, at Launch Complex 39A at NASA’s Kennedy Space Center in Florida. Photo Credit (NASA/Joel Kowsky)

ALT NASA’s Nancy Grace Roman Space Telescope, encapsulated in a protective payload fairing atop a SpaceX Falcon Heavy rocket, is seen at sunrise, Saturday, Aug. 29, 2026, at Launch Complex 39A at NASA’s Kennedy Space Center in Florida. Photo Credit (NASA/Joel Kowsky)

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Tom Kerss FRAS retweeted
SpaceX
@SpaceXAug 29
Falcon Heavy is vertical at pad 39A in Florida ahead of Sunday’s launch of @NASA’s Nancy Grace Roman Space Telescope, designed to study dark energy, exoplanets, and astrophysics β†’ spacex.com/launches/roman
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Tom Kerss FRAS retweeted
NASA
@NASAAug 26
A partial lunar eclipse will pass over the Americasβ€”and parts of Europe and Africaβ€”tomorrow night! It will reach its peak around 12:12am ET (0412 UTC) on Thursday, Aug. 28. More info: go.nasa.gov/4qFpfIL
A diagram depicting the partial lunar eclipse occuring on Aug 28, with times in UTC marking the different stages of the eclipse. Credit: NASA's Scientific VIsualization Studio

ALT A diagram depicting the partial lunar eclipse occuring on Aug 28, with times in UTC marking the different stages of the eclipse. Credit: NASA's Scientific VIsualization Studio

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Tom Kerss FRAS retweeted
HUBBLE
@HUBBLE_spaceAug 20
This #HubbleTopImage returns to a NASA/ESA Hubble Space Telescope view of Uranus! πŸ”΅ This image, which was taken in October 2022 using both visible and ultraviolet wavelengths, captures a rare view of the aurorae of Uranus. 1/2
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Tom Kerss FRAS retweeted
UK Space Agency
@spacegovukAug 5
On 12 August there will be a partial solar eclipse from the UK. β˜€οΈ πŸŒ‘ 🌍 Starting at 6.13pm, maximum eclipse will occur at 7.10pm with around 90-96% of the Sun being obscured, and ends at 8.03pm. Read more via @skyatnightmag πŸ‘‰ orlo.uk/5BnjJ #SolarEclipse2026
A glowing orange crescent of the sun during a partial solar eclipse against a black background. Photo Credit: NASA/Bill Ingalls

ALT A glowing orange crescent of the sun during a partial solar eclipse against a black background. Photo Credit: NASA/Bill Ingalls

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Tom Kerss FRAS retweeted
Astronomy Now@AstronomyNowAug 5
One week to the solar #eclipse! Here's a reminder from where in the world you can see it.Β  Totality falls over a path from Greenland, through Iceland, and across Spain, but much of Europe will still experience a wonderful, deep, partial eclipse. Where will you be?
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Tom Kerss FRAS retweeted
ESA Science
@esascienceAug 4
Virtual totality? β˜€οΈ Ahead of the 12 August eclipse, KU Leuven researchers are using computer simulations and the latest solar observations from missions such as Solar Orbiter and Proba-3 to predict what the solar corona will look like. 1/2
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Omg it's happening! Everybody stay calm! We're officially in our countdown to launch! Roman is set to launch August 30 at 07:26 am EDT from @NASAKennedy. Stay up to date on the latest launch details: science.nasa.gov/mission/rom…
NASA
@NASAJul 29
Replying to @NASA @NASARoman
Learn more about the Roman Space Telescope and how it will help us solve some of the greatest mysteries of the universe: science.nasa.gov/mission/rom…
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