Claire Gasque, physics graduate at the University of California, Berkeley, joins Jonathan to discuss the mysterious atmospheric phenomenon only known as STEVE.
Also joining Jonathan for the Newsround is Dr Ruth Freeman from Science Foundation Ireland and Shane Bergin from UCD to look back on 2023's biggest science stories.
Image by Elfiehall - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=58633661
