The Moon Is 40 Million Years Older Than Thought, Lunar Rock Samples Suggest

The Moon Is 40 Million Years Older Than Thought, Lunar Rock Samples Suggest
By Will Sullivan, Smithsonian Magazine, October 23, 2023
https://www.smithsonianmag.com/smart-news/the-moon-is-40-million-years-older-than-thought-lunar-rock-samples-suggest-180983117/

Scientists believe moon is 40 million years older than first thought
By Simon Druker, UPI, October 23, 2023
https://www.upi.com/Science_News/2023/10/23/moon-40m-years-older-lunar-surface-cyrstals/4101698072068/

The Moon is 40 million years older than previously thought
ScienceDaily, Northwestern University, October 23, 2023
https://www.sciencedaily.com/releases/2023/10/231023124332.htm

The open access paper is:

Greer, J., Zhang, B., Isheim, D., Seidman, D.N., Bouvier, A., and Heck, P.R., 2023. 4.46 Ga zircons anchor chronology of lunar
magma ocean Geochemical Perspectives Letters v27, Published 23 October 2023
https://doi.org/10.7185/geochemlet.2334

https://www.geochemicalperspectivesletters.org/article2334/

Yours,

Paul H.

Suspected extraterrestrial impact crater reported from North Korea

Suspected extraterrestrial impact crater reported from North Korea

A suspected extraterrestrial impact crater, the Hapcheon impact
crater, is reported from North Korea by the below open access papers.

Lim, J., Hong, S.S., Han, M., Yi, S. and Kim, S.W., 2021.
First finding of impact cratering in the Korean Peninsula. Gondwana Research, 91, pp.121-128.
https://www.sciencedirect.com/science/article/pii/S1342937X20303105

Lee, J.Y., Shin, S., Yoon, H.H., Kim, J.C., Choi, Y., Nahm, W.H. and Kim, H., 2023. 

The Sedimentary records of the Hapcheon impact crater basin in Korea over the past 1.3 Ma. Frontiers in Earth Science, 11, p.1102785.

https://www.frontiersin.org/articles/10.3389/feart.2023.1102785/full

Yours,

Paul H.