cosmology

On models of cosmic inflation in D=4 supergravity and the -attractor mechanism & the -problem resolution: (See also at Starobinsky model of cosmic inflation the references on its embedding into supergravity). Dimitri V. Nanopoulos, Keith A. Olive, Mark Srednicki, K. Tamvakis: Primordial inflation in simple supergravity, Phys. Lett. B 123 (1983) 41–44 [doi:10.1016/0370-2693(83)90954-1] R. Holman, …

Planck Collaboration, Planck 2013 results. XXII. Constraints on inflation (arXiv:1303.5082) Planck Collaboration, BICEP2 A Joint Analysis of BICEP2/Keck Array and Planck Data (arXiv:1502.00612) Planck Collaboration, Planck 2015, Overview of results (arXiv:1502.01582) Planck Collaboration, Planck 2015 results. XIII. Cosmological parameters (arXiv:1502.01589) Planck Collaboration, Planck 2015 resul…

Formulation of (Lagrangian densities for) type II supergravity with “democratic”/“pregeometric” RR-fields subject to self-duality: On gauged supergravity in view of U-duality and M-theory: On supergravity models of cosmic inflation: Renata Kallosh, Andrei Linde, Diederik Roest: Superconformal Inflationary -Attractors, J. High Energ. Phys. 2013 198 (2013) [doi:10.1007/JHEP11(2013)198, arXiv:1311.0…

A major challenge to dark energy, the mysterious force believed to be driving the universe’s accelerating expansion, has been overturned by a new study. Astronomers say a new analysis has reinforced one of the most important discoveries in modern cosmology, finding that the universe is still expanding at an accelerating rate. The result counters a [...]

In her first year of graduate school at Stanford University, back in 2021, Sydney Erickson knew only that she was going to be a physicist. She rotated through different research groups, from particle physics to cosmology, until she started hearing buzz about a giant camera being built on campus for the Vera C. Rubin Observatory. “I was drawn toward that community,” she says, recalling those invol…

Erini Lambrides was set on becoming an actor when astrophysics cast her onto a more universal stage. Now she’s a research fellow at NASA and the University of Maryland studying supermassive black holes and the phenomenon called Little Red Dots. These dots are pockmarks in images from JWST that seem to indicate the brief—in universal time—period when these black holes were growing. There are so ma…

Thanks to the James Webb Space Telescope, the Big Bang’s replacement theory is gaining traction in the scientific community.

The M.I.T. cosmologist shares his thoughts on physics, the federal funding of science and the resilience of the scientific community

This is a submission for the June Solstice Game Jam What I Built Solstice Balance is an interactive 3D calibration simulator where the player stabilizes Earth's obliquity (target 23.44°) and rotational speed to prevent a simulated thermal collapse. Players use thruster-style controls to correct tilt and spin while reacting to procedurally generated cosmic disturbances (solar flares, gravitational…

A SpaceX Falcon 9 rocket carrying 24 Starlink satellites lifted off from Vandenberg Space Force Base in California on Monday, June 15, 2026.

If the Sun's fusion shut off right now, you would not notice for a very long time. The first stop is understanding the Sun itself: a vast pile of gravitating matter where fusion is so absurdly inefficient that, pound for pound, a compost heap beats it.

Astronomers have directly detected the neutral gas that fueled star formation in some of the universe’s earliest galaxies, marking a major step toward understanding cosmic origins.

Antihydrogen, the bound state of a positron and an antiproton, is the only pure anti-atomic system ever studied. It is produced exclusively in the laboratory, as it has never been observed in nature. This unique system is of great interest for searching for tentative differences between matter and antimatter. Antihydrogen has been routinely trapped since 2010 and accumulated since 2017, enabling,…

Nature Astronomy, Published online: 15 June 2026; doi:10.1038/s41550-026-02841-6 By counting single atoms of 60Fe (which have a supernova origin), 244Pu and 247Cm (both formed via the r-process and independent of regular supernovae) in a deep-sea crust, the last actinide-producing r-process event near Earth is found to have occurred >100 Myr ago.

Are you ready for a new view of the universe? The Nancy Grace Roman Space Telescope will reveal distant worlds, dark energy, and the structure of the cosmos, and we want you to be a part of it!   Digital creators and social media users are invited to register to our NASA Social for the Nancy […] The post Experience the Launch of NASA’s Roman Space Telescope appeared first on NASA Science .

Using Webb’s NIRCam and NIRSpec instruments, astronomers have obtained the deepest spectrum ever taken of a little red dot. The post Webb Delivers Strongest-Ever Case for ‘Black Hole Stars’ Lurking in Early Universe appeared first on Sci.News: Breaking Science News .

A new study suggests active supermassive black holes may generate millions of giant planets, reshaping ideas about where worlds can form.

A meteorite shows evidence that an ancient crash on the moon 3.5 billion years ago was so powerful, it turned the surface molten.

For three years they've been one of the strangest puzzles in astronomy. Tiny, mysterious red dots scattered across the early universe, so abundant and so bright that some researchers wondered if they had "broken" cosmology itself. Now the James Webb Space Telescope has captured the most detailed look yet at one of them, and the answer it reveals is as exotic as the name suggests: a star sized obj…

Half of the elements heavier than iron are produced in the rapid neutron-capture process. While astronomers are still debating where these elements are forged, a missing isotope in a deep-sea crust has revealed when the last nearby event occurred: more than 100 million years ago.