Exoplanets

Reporting for The Boston Globe, Hanna Kreuger highlights a graph documenting the atmospheric conditions of the exoplanet WASP-96b, which NASA included in its first release of images from the James Webb Space Telescope. Describing it as “perhaps the image that showcases Webb’s greatest triumph,” Krueger notes that the graph was created using an equation developed by Prof. Sara Seager. Seager and her team will use the telescope to peer into TRAPPIST-1e, an exoplanet widely considered to be potentially Earth-like and habitable, adds Krueger.

As the first images from the James Webb Space Telescope were released on Tuesday, showcasing the deepest view of the universe ever, CBS Boston spoke with Prof. Julien de Wit about the importance of the moment. “It’s groundbreaking. It’s like going from listening to the radio to suddenly being able to watch television,” says de Wit. “Further down the road, we may be able to see if planets are habitable, if some of these planets have signs of life one way or the other. There are so many things we’re going to discover thanks to it.”

Astronomers have identified two Earth-sized exoplanets orbiting a red dwarf star 33 light years away, reports Jamie Carter for Forbes. “Both planets in this system are each considered among the best targets for atmospheric study because of the brightness of their star,” explains postdoc Michelle Kunimoto.

To celebrate the list of known exoplanets topping 5,000, New York Times reporter Becky Ferreira spoke with astronomers, actors and astronauts about their favorite exoplanets or exoplanetary systems. “TOI-1233 is an outstanding planetary system with its high number of transiting planets, sunlike host star and its proximity to the solar system,” says postdoc Tansu Daylan of the system he detected along with two high school students he was mentoring.

MIT astronomers have observed the dark side of a football-shaped exoplanet known as WASP-121b and found that it may have metal clouds made up of iron, corundum, and titanium, reports Isaac Schultz for Gizmodo. “The vastly different temperatures on either side of the planet make a dynamic environment for the various molecules floating around the atmosphere,” writes Schultz. “In the daytime, water gets ripped apart by the nearly 5,000° Fahrenheit heat and blown to the night side of the planet by 11,000-mile-per-hour winds.”

CNN reporter Ashley Strickland writes that MIT researchers have observed the dark side of an exoplanet that is 855 light years from Earth and found that the gas giant may have metal clouds and rain containing liquid gems. The researchers found that the “exoplanet has a glowing water vapor atmosphere and is being deformed into the shape of a football due to the intense gravitational pull of the star it orbits,” writes Strickland.

TESS, a NASA mission led and operated by MIT, has discovered over 5,000 planets candidates outside of our solar system, reports Ed Browne for Newsweek. “This time last year, TESS had found just over 2,400 TOIs (TESS Objects of Interest),” says postdoctoral associate Michelle Kunimoto. “Today, TESS has reached more than twice that number – a huge testament to the mission and all the teams scouring the data for new planets.”

Prof. Sara Seager speaks with New York Times reporter Dennis Overybye about the James Webb Telescope. Seager is part of a team that is planning to use the telescope to observe an exoplanet named Trappist-1e to determine if the planet has an atmosphere.

CNN reporter Ashley Strickland writes that NASA’s Transiting Exoplanet Survey Satellite (TESS), an MIT-led mission, has discovered an exoplanet approximately the size of Mars where a year lasts for about eight hours. “Astronomers are eager to learn more about these small planets that quickly spin around their stars in less than 24 hours because they are not sure how they form and end up in such an extreme orbit,” writes Strickland.

A team of astronomers, including MIT researchers, has discovered an ultrahot Jupiter that orbits its star in just 16 hours, reports Robert Lea for Newsweek. “Ultrahot Jupiters such as TOI-2109b constitute the most extreme subclass of exoplanet,” explains former MIT postdoc Ian Wong. “We have only just started to understand some of the unique physical and chemical processes that occur in their atmospheres – processes that have no analogs in our own solar system.” 

Newsweek reporter Robert Lea writes that astronomers from MIT and elsewhere have found evidence of a large planetary collision that stripped the atmosphere from a planet. “While astronomers have long believed these kinds of collisions are common throughout the Universe, this is the first time that they have spotted evidence of one that stripped an atmosphere in such a way around a distant star,” writes Lea.

A new study co-authored by MIT researchers presents the first evidence that a distant planet had its atmosphere partially blown away by a large impact, reports Charles Choi for Space.com. "I think a really critical implication is that the gas that is released in the aftermath of a giant impact can last for a long time, and it can affect the way the system evolves long-term," explains graduate student and lead author Tajana Schneiderman. 

Prof. Sara Seager speaks with Washington Post reporter Timothy Bella about the search for exoplanets and the James Webb Telescope. “I just remember seeing the stars and being overwhelmed by the beauty and the vastness and the mysteriousness of it,” recalled Seager, of a camping trip with her father that helped inspire her interest in space. “There’s something almost terrifying about it at the same time as it being so beautiful, because yeah, it’s so unknown, and it seems like it goes on forever.”

Postdoc Tansu Daylan speaks with CNN reporter Ada Wood about his work mentoring two high school students, and their discovery of four new exoplanets. "When it comes to studying by comparison — that is, studying the atmospheres of planets beyond the solar system around sun-like stars — this is probably one of the best targets that we will ever get," says Daylan.

Two high school students and their mentor, MIT postdoc Tansu Daylan, have discovered four new exoplanets located about 200 light years from Earth, reports Nora McGreevy for Smithsonian. The students were participating in the Student Research Mentoring Program, which pairs young astronomers with scientists at MIT and Harvard. “[The students] are so good at finding things that may skip your eyes, basically. It’s fun. And I really like the exchange of ideas,” Daylan adds.