“The Sparkler” galaxy—seen here in JWST’s first deep image—was found by Saint Mary’s astronomers and colleagues and hosts some of the universe’s first stars. Credit: NASA
The James Webb Space Telescope (JWST), the most powerful space telescope ever built, has a Saint Mary’s connection. Dr. Marcin Sawicki, Canada Research Chair in Astronomy, is part of the team that developed a key part of the telescope, namely the Near Infrared Imager and Slitless Spectrograph (NIRISS), which records data at near-infrared wavelengths invisible to the human eye.
“Stars, galaxies and objects all have an infrared pattern, similar to a barcode” says Dr. Sawicki. “With the NIRISS, we can read the object’s bar code and figure out all sorts of properties like how old it is, how far away it is and whether it’s a galaxy or other space object.”
Dr. Sawicki and his students have unprecedented access to the Webb telescope. “Our postdocs and students will be using JWST to observe the birth of the first galaxies soon after the Big Bang.” he says. “The potential for extremely impactful science is enormous. We’re eager to use Webb for world-leading research here in Nova Scotia.”
Did you know? “The Sparkler” galaxy—seen in JWST’s first deep image—was found by Saint Mary’s astronomers and colleagues and hosts some of the universe’s first stars.