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TOI-199b, Roman Coronagraph First Light & Webb's Collision Fingerprints
Audio is available on Spreaker — see link below.
A Saturn-sized world in a never-before-studied temperature zone, NASA's Roman Space Telescope achieves coronagraph first light, and Webb fingerprints planetary collisions from mineral dust. Plus: an Oklahoma crater redated by 100 million years reshakes Earth's impact history.
Audio is available on Spreaker — see link below.
Astronomers have found a planet sitting in a temperature zone we've never studied in detail before, and it's changing what we thought we knew about where giant planets can form. TOI-199b is a Saturn-sized world, three hundred thirty light-years away, with surface temperatures around one hundred seventy-five degrees Fahrenheit.
While Webb was mapping atmospheres, NASA's Roman Space Telescope completed a different kind of milestone. Between September fifteenth and twenty-first, Roman ran fine-guidance system tests that demonstrated the pointing precision needed for direct planet imaging.
There's a third thread running through this week's findings, and it connects directly to how planets like TOI-199b form in the first place. Webb completed a comprehensive mineral analysis of twenty-one extreme debris disks around young stars.
Closer to home, a significant revision in Earth's own impact history. The Ames impact structure in Oklahoma has been redated by one hundred million years.
The near-term watchpoints are clear. Roman's coronagraph needs to demonstrate stable performance under real observing conditions, not just commissioning tests.
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