Themiya Nanayakkara

Aug 23, 2024 | nature.com | Karl Glazebrook |Kim-Vy H. Tran |Tucker Jones |Nandini Sahu |Themiya Nanayakkara |Glenn G. Kacprzak | +2 more

AbstractWhile quiescent galaxies have comparable amounts of cool gas in their outer circumgalactic medium (CGM) compared to star-forming galaxies, they have significantly less interstellar gas. However, open questions remain on the processes causing galaxies to stop forming stars and stay quiescent. Theories suggest dynamical interactions with the hot corona prevent cool gas from reaching the galaxy, therefore predicting the inner regions of quiescent galaxy CGMs are devoid of cool gas.

Mar 6, 2024 | nature.com | Kristan Boyett |Michele Trenti |Nicha Leethochawalit |Benjamin Metha |Guido Roberts-Borsani |Paola Santini | +12 more

AbstractJames Webb Space Telescope observations have spectroscopically confirmed the existence of galaxies as early as 300 Myr after the Big Bang and with a higher number density than what was expected based on galaxy formation models and Hubble Space Telescope observations.

Mar 5, 2024 | thehindu.com | Themiya Nanayakkara

About 400,000 years after the Big Bang, the cosmos was a very dark place. The glow of the universe’s explosive birth had cooled, and space was filled with dense gas – mostly hydrogen – with no sources of light. Slowly, over hundreds of millions of years, the gas was drawn into clumps by gravity, and eventually the clumps grew big enough to ignite. These were the first stars. At first their light didn’t travel far, as much of it was absorbed by a fog of hydrogen gas.

Mar 2, 2024 | phys.org | Themiya Nanayakkara

About 400,000 years after the Big Bang, the cosmos was a very dark place. The glow of the universe's explosive birth had cooled, and space was filled with dense gas —mostly hydrogen—with no sources of light.

Feb 28, 2024 | theconversation.com | Themiya Nanayakkara

About 400,000 years after the Big Bang, the cosmos was a very dark place. The glow of the universe’s explosive birth had cooled, and space was filled with dense gas – mostly hydrogen – with no sources of light. Slowly, over hundreds of millions of years, the gas was drawn into clumps by gravity, and eventually the clumps grew big enough to ignite. These were the first stars. At first their light didn’t travel far, as much of it was absorbed by a fog of hydrogen gas.