A girl attends Friday prayers in front of an army tank in Tahrir Square in Cairo February 18, 2011. Five years ago thousands of protesters took to the streets demanding the end of the 30-year reign of President Mubarak as Egypt became the second country to join the Arab Spring. After weeks of clashes, strikes and protests across Egypt, Mubarak resigned on February 11, 2011. (Photo by Suhaib Salem/Reuters)

High-rise buildings are partly covered by heavy fog at Hong Kong's Victoria Harbour Monday, March 20, 2017. Fog blanketing Hong Kong is common in springtime and may greatly affect shipping and aviation. (Photo by Vincent Yu/AP Photo)

Most people know Nikon as a purveyor of pro and consumer-grade digital cameras. But the company's expertise with optics bleeds over into related markets – it's one of the science community's major suppliers of microscopes. And each year the company asks the community to send it some of their favorite images of tiny objects. A panel of scientists and journalists have chosen the best of this past year's submissions, which Nikon has placed on its Small World site.

Photo: Honorable Mention. “Snow crystal, illuminated with colored lights (5x)”. (Photo by Dr. Kenneth Libbrecht, California Institute of Technology (Caltech), Department of Physics, Pasadena, California, USA)

Australian professional boxer Ebanie Bridges at the weigh-in ahead of their IBF World Bantamweight Title fight against Shannon O'Connell during the weigh in at Aspire, Leeds, United Kingdom on Friday, December 9, 2022. (Photo by Andrew Couldridge/Action Images via Reuters)

Gold medallist Kayla DiCello of the U.S. celebrates on the podium after winning the women's all-around final alongside silver medallist Brazil's Flavia Saraiva and bronze medallist Jordan Chiles of the U.S. at the Pan Am Games in Santiago, Chile on October 23, 2023. (Photo by Agustin Marcarian/Reuters)

American singer-songwriter Billie Eilish in the last decade of October 2023 partners with Gucci to advocate for animals and gives us something to contemplate. (Photo by Instagram)

Palestinian athlete Ahmed Abu Hasira demonstrates his parkour skills during a lockdown amid the coronavirus disease (COVID-19) outbreak in Gaza City on September 8, 2020. (Photo by Mohammed Salem/Reuters)

American model Zion Moreno attends the Netflix film “White Noise” and opening ceremony red carpet at the 79th Venice International Film Festival on August 31, 2022 in Venice, Italy. (Photo by Andreas Rentz/Getty Images for Netflix)