APOD Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss The Scale of the Universe – Great Debate in 1996 Debate Proceedings Six published papers from the 1996 debate which appeared in the 1996 December Publications of the Astronomical Society of the Pacific. Included are the two introductoryContinue Reading
Tammann – van den Bergth Baird AuditoriumThe Smithsonian InstitutionNational Museum of Natural History 21 April 1996 Debate Program: 1 – 4:30 pm; Reception: 4:30 – 5:30 pm Sponsors: The Smithsonian Institution Laboratory for Astrophysics,National Air and Space Museum;NASA Compton Gamma Ray ObservatoryScience Support Center;George Mason University Center for Earth ObservingandContinue Reading
ESA/Hubble & NASA, D. Thilker, the MAUVE-HST Team A chaotic secret hides within this seemingly serene image of spiral galaxy NGC 4698 taken by NASA’s Hubble Space Telescope and released on Sept. 18, 2026. As a spiral galaxy like our own Milky Way galaxy, NGC 4698 has spiral arms thatContinue Reading
The U.S. has tapped into its strategic oil reserve to help drive down rising gasoline prices in the wake of the war with Iran. Can oil from Venezuela help fill it back up? (Image credit: Brandon Bell)Continue Reading
Researchers at UC Berkeley have discovered valley fever spores in cities in the Central Valley and linked nearby oil drilling to an uptick in infection risk — challenging the long-held belief that the deadly disease only affects rural areas.Continue Reading
World leaders approved the UN Declaration on Sea Level Rise by consensus on Thursday as the UN chief warned that encroaching waters are already threatening the future of coastal communities worldwide.Continue Reading
Promising efforts to restore degraded land are now in the spotlight at a time when 40 per cent of the world’s land currently faces degradation and drought, threatening the livelihoods of over three billion people, the head of the UN Convention to Combat Desertification (UNCCD) said Wednesday, announcing three winnersContinue Reading
As Indian Point Energy Center undergoes decommissioning in New York’s 17th Congressional District, complaints over the process are mounting against the backdrop of an increasingly pro-nuclear federal agenda. By Leana Carbonez NY-17: Second in a series on the environmental stakes of one of the nation’s most fiercely contested congressional races.Continue Reading
The Distance Scale to Gamma Ray Bursts Baird AuditoriumNatural History Museum, The Smithsonian Institution22 April 1995Debate Program: 1 – 4:15 pm; Reception: 4:15 – 5:30 pmDebate Program Sponsors:NASA, The Smithsonian Institution, George Mason UniversityReception Sponsors: The Smithsonian Institution, George Mason University, Universities Space Research Association (USRA), Associated Universities Inc. (AUI),Continue Reading
The Distance Scale to Gamma-Ray Bursts Great Debate in 1995 An Introduction by Robert Nemiroff The 1920 Shapley-Curtis Discussion: Background, Issues, And Outcome by Virginia Trimble Gamma-Ray Bursts: An Overview by Gerald Fishman How Far Away Are Gamma-Ray Bursters? by Bohdan Paczynski The Distance Scale To Gamma-Ray Bursts by DonaldContinue Reading
Balendra Shah, 36, comes to the U.N. as a sun-glassed symbol of Gen Z political power. But concerns about his style are growing at home after devastating floods left thousands dead or missing.Continue Reading
Definitive answers to the big questions.Continue Reading
A magnet-producing bacterium extended the average lifespan of C. elegans worms by more than 43% while helping protect their neurological and intestinal health. Researchers traced much of the effect to suppression of ferroptosis, a damaging form of cell death linked to iron buildup and oxidative stress., Read MoreContinue Reading