Astronomers at the University of Hawaii have found an outer moon of Jupiter
that has been missing for a quarter of a century. Originally observed for six
days in 1975 and designated S/1975 J1, the moon was lost later that year. Brian
Marsden of the Harvard-Smithsonian Center for Astrophysics noticed similarities
between the object spotted by the Hawaii astronomers, one seen in August by his
colleague Matt Holman and the missing moon. Calculations by Harvard-Smithsonian
confirmed that the 5-kilometre moon has a 129-day orbit that takes it between 6
and 9 million kilometres from Jupiter.
To continue reading, today with our introductory offers
Advertisement
More from New Scientist
Explore the latest news, articles and features
ÎçÒ¹¸£Àû1000¼¯ºÏ
Hantavirus outbreak will not cause a covid-style pandemic, says WHO
News
ÎçÒ¹¸£Àû1000¼¯ºÏ
PCOS postpones perimenopause and allows pregnancies at older ages
News
ÎçÒ¹¸£Àû1000¼¯ºÏ
Coffee's mood-boosting effects aren't just down to caffeine
News
Comment
The best new popular science books of May 2026
Culture
Popular articles
Trending New Scientist articles
1
PCOS postpones perimenopause and allows pregnancies at older ages
2
Red-light therapy does have health benefits but not the ones you think
3
A lost ancient script reveals how writing as we know it really began
4
Man destined for Alzheimer's may have been saved by accidental therapy
5
Woman in cancer remission without treatment in highly unusual case
6
The greatest David Attenborough documentaries you really need to watch
7
Where has the deadly hantavirus come from and how does it spread?
8
Extinct relative of koalas discovered in Western Australia
9
Prebiotic chewing gum could be helpful for gum disease
10
Dating over 50 is probably on the rise – but we know little about it
