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New EHT Images Reveal a Writhing Relativistic Jet Deep in the Heart of Black Hole System

Figure 1. Under electromagnetic duality, an electrically charged particle is mapped to a magnetic monopole, and vice versa. The form of the Maxwell equations is preserved by this operation.

Unusual ozone hole opens over the Arctic.

Saturn and it's aurora.

Illustration of multiwavelength 3C 279 jet structure in April 2017. The observing epochs, arrays, and wavelengths are noted at each panel.

UNESCO on 30 March hosted an online meeting of representatives of ministries in charge of science all over the world. Participants included 77 ministers, including governmental secretaries representing a total of 122 countries, as well as Mariya Gabriel, European Commissioner for Innovation, Research, Culture, Education and Youth, Sarah Anyang Agbor, African Union Commissioner for Human Resources, Science and Technology, Moisés Omar Halleslevens Acevedo, former Vice President of Nicaragua and Dr Soumya Swaminathan, the World Health Organization’s Chief Scientist.

Astronomers Detect First Double Helium-Core White Dwarf Gravitational Wave Source

Messenger’s iridescent Mercury.

A Puzzling Geometry Conundrum

Artist’s illustration of a tidal disruption event, in which a black hole tears apart a passing star and lights up as it accretes the stellar material.