Category Archives: HPF Science

HPF Discovers a Close-In Neptune Orbiting a Very Low-Mass Star

Artist’s rendering of the Neptune-mass exoplanet orbiting the very low-mass star LHS 3154.  Video Credit: Abigail Minnich Introduction As the name implies, the Habitable-zone Planet Finder was designed primarily to search for Earthlike planets orbiting nearby stars.  Its sensitivity to … Continue reading

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TOI-3785 b: A Low-Density Neptune Orbiting an M-dwarf Star

By Luke Powers The planet now known as TOI-3785 b was observed in 2019 by the Transiting Exoplanet Survey Satellite (TESS). TESS observed periodic dips in the star’s brightness (known as a transit) that occurred every 4.67 days. As TOI-3785 … Continue reading

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The Unusual Transit of TOI-3884b: A Pole-Spot Crossing Super-Neptune

The TESS Mission For the past five years, NASA’s Transiting Exoplanet Survey Satellite (TESS) has surveyed the sky searching for new planets orbiting our closest stellar companions. To accomplish this colossal task, this satellite stares at hundreds of thousands of … Continue reading

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