The estimate of 400 rogue planets comes from a nine-year-long survey called Microlensing Observations in Astrophysics (MOA).
The estimate of 400 rogue planets comes from a nine-year-long survey called Microlensing Observations in Astrophysics conducted at New Zealand's Mount John University Observatory.. It is a type of gravitational lensing that is useful for detecting low-mass planets from a long distance.
However, there is a catch: these planets are extremely rare to identify as a microlensing event is a “one-time occurrence.” Therefore, there are fewer opportunities for follow-up observations. Using four detectors, a 1.8-meter PRIME telescope will undertake wide-area microlensing surveys in near-infrared light.
“Roman will be sensitive to even lower-mass rogue planets since it will observe from space. The combination of Roman’s wide view and sharp vision will allow us to study the objects it finds in more detail than we can do using only ground-based telescopes, which is a thrilling prospect,” said Naoki Koshimoto, an assistant professor at Osaka University.
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1st Barbie dolls to fly into space make their debut at Smithsonian Air and Space MuseumRobert Pearlman is a space historian, journalist and the founder and editor of collectSPACE.com, an online publication and community devoted to space history with a particular focus on how and where space exploration intersects with pop culture. Pearlman is also a contributing writer for Space.com and co-author of 'Space Stations: The Art, Science, and Reality of Working in Space” published by Smithsonian Books in 2018. He previously developed online content for the National Space Society and Apollo 11 moonwalker Buzz Aldrin, helped establish the space tourism company Space Adventures and currently serves on the History Committee of the American Astronautical Society, the advisory committee for The Mars Generation and leadership board of For All Moonkind. In 2009, he was inducted into the U.S. Space Camp Hall of Fame in Huntsville, Alabama. In 2021, he was honored by the American Astronautical Society with the Ordway Award for Sustained Excellence in Spaceflight History.
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