Space Shuttle Endeavour displayed vertically in new exhibit at California Science Center

This multiwavelength scene shows the Jellyfish Nebula supernova remnant (right), the interstellar cloud it’s interacting with, and a distinctive curving filament to its upper left (purple). The filament, which is shown here both in optical and ultraviolet (UV) light, is the visible part of an overlapping supernova remnant, G189.6+3.3, that’s more prominent in radio and…

The theory of panspermia proposes that life, or the ingredients needed for it, can spread throughout the cosmos aboard asteroids, comets, and other rocky objects. When life develops on a planet, powerful impacts can blast material from its surface into space, potentially carrying microscopic organisms or organic compounds to other worlds. Scientists have long debated…

The headwaters of the Fermi Paradox channel directly through Michael Hart and Frank Tipler, and it’s a testament to the power of their arguments that this remains true today. It was Hart who in “An Explanation for the Absence of Extraterrestrials on Earth” (published in the Quarterly Journal of the Royal Astronomical Society in 1975)…

Here is SpacePolicyOnline.com’s list of space policy events for the week of June 14-20, 2026 and any insight we can offer about them. The Senate is in session for part of the week. The House is in recess except for pro forma sessions. During the Week This Friday is a federal holiday — Juneteenth —…

Lincoln Steffens was a reporter so dogged that political party bosses called him a “born crook that’s gone straight.” He and his fellow muckrakers redefined modern journalism Jon Grinspan | Curator, political history, National Museum of American History Summer 2026 American journalist, lecturer and political philosopher Lincoln Steffens (1866-1936), in Union Square, New York City,…

Artemis II made headlines, but did it impact the public? Polls suggest that most people in the United States were aware of the mission, but interest in it faded quickly once it was over. In a new article, The Planetary Society’s science editor, Asa Stahl, explores whether Artemis II resonated with the public, or merely…