I was preparing for my early morning class back in January 2025 when I received a notice regarding an asteroid called 2024 YR4. It said the probability it could hit Earth was unusually high. As ...

When scientists spot an asteroid whose trajectory might take it close to Earth, they monitor it frequently and calculate the probability that it might collide with our planet.

I have been studying planetary defense, particularly being part of past, ongoing, and future small body missions. I was part of the NASA/DART mission. I am currently part of the NASA/Lucy mission and ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Robert Kelly is managing director of XTS Energy LLC ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This article was originally published at The Conversation. The publication contributed the ...

Ito, H., Yasuda, N., and Matsumoto, M. 1985. The probability of parentage exclusion based on restriction fragment length polymorphisms.Jpn. J. Human Genet. 30: 261–269.

Parsimony methods are often used to map a character's evolution on a phylogenetic tree by reconstructing the ancestral states at interior nodes of the tree. Although the statistical behavior of ...