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☆ Astronomers surprised to find planet 'too massive for its star'
▼ + stars: | 2023-12-01 | by ( Will Dunham | ) www.reuters.com time to read: +4 min

[1/2] An undated handout image shows an artistic rendering of the mass comparison of the star LHS 3154 and its planet LHS 3154b, and our own Earth and Sun. The mass ratio of this planet with its star is more than 100 times greater than that of Earth and the sun. "We discovered a planet that is too massive for its star," said Penn State astronomer Suvrath Mahadevan, one of the leaders of the study published this week in the journal Science. The planet, called LHS 3154 b, orbits at about 2.3% of Earth's orbital distance from the sun, circling its star every 3.7 days. So a very low mass star should have a disk that is also low mass.

Persons: Suvrath Mahadevan, Guðmundur Stefánsson, Stefánsson, Mahadevan, Will Dunham, Rosalba O'Brien Organizations: LHS, Penn State University, Handout, REUTERS Acquire, Rights, Penn State, Princeton University, University of Texas, McDonald, Thomson

☆ Puzzlingly massive planet found orbiting a small star
▼ + stars: | 2023-11-30 | by ( Ashley Strickland | ) edition.cnn.com time to read: +5 min

The planet, about the mass of Neptune and more than 13 times as massive as Earth, was detected orbiting an ultracool M-dwarf star called LHS 3154 — which is nine times less massive than our sun. This graphic compares the sizes of our sun and Earth with the smaller, cooler LHS 3154 star and its orbiting planet, LHS 3154b. For example, small M dwarf stars are the most common throughout the Milky Way galaxy, and they typically have small, rocky planets orbiting them, rather than gas giant planets. “The planet-forming disk around the low-mass star LHS 3154 is not expected to have enough solid mass to make this planet,” Mahadevan said. A team of scientists led by Mahadevan built the HPF, which was designed to detect planets orbiting within the habitable zone of small, cool stars.

Persons: ”, Suvrath Mahadevan, Verne M, ” Mahadevan, Mahadevan, “, Megan Delamer, ” Delamer Organizations: CNN —, LHS, Penn, Penn State, McDonald Observatory Locations: Texas

There's a new heavy hitter in the hunt for planets beyond our solar system. NASA’s James Webb Space Telescope — the next-generation observatory that has already beamed back some of the clearest and most stunning views of the universe — was used for the first time to confirm the existence of an exoplanet, scientists announced Wednesday. The exoplanet confirmation marks an important milestone for the $10 billion Webb telescope, which launched into space in December 2021 and began science operations less than a year ago. “These first observational results from an Earth-size, rocky planet open the door to many future possibilities for studying rocky planet atmospheres with Webb,” Mark Clampin, director of the astrophysics division at NASA headquarters in Washington, D.C., said in a statement. “Webb is bringing us closer and closer to a new understanding of Earth-like worlds outside our solar system, and the mission is only just getting started.”

☆ New Jersey high school football player dies after being injured on the field
▼ + stars: | 2022-09-23 | by ( Chantal Da Silva | Chantal Da Silva Is A Breaking News Editor For Nbc News Digital Based In London. | ) www.nbcnews.com time to read: +2 min

A high school football player in New Jersey has died nearly two weeks after he was seriously injured during a football game earlier this month, officials said. Xavier McClain, 16, succumbed to injuries sustained during a Sept. 9 game between his school, Linden High School and the nearby Woodbridge High School, Derek Armstead, the mayor of Linden, a city just 13 miles southwest of Manhattan, said Wednesday. A Twitter account identifying itself as the official page for Linden High School football shared a tribute to McClain on Thursday, with the words "Rest In Peace Xavier McClain." Armstead said the Linden community would do whatever it could to support McClain's family in the wake of the tragedy. Armstead and the Linden High School did not immediately respond to overnight requests for comment.

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