Multi-planet systems exhibit remarkable architectural diversity. However, short-period giant planets are typically isolated. Compact systems like TOI-5398, with an outer close-orbit giant and an inner small-size planet, are rare among […]
Stellar Cartography
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Status Report, Stellar Cartography
A Fading Radius Valley Towards M-dwarfs, A Persistent Density Valley Across Stellar Types
The radius valley separating super-Earths from mini-Neptunes is a fundamental benchmark for theories of planet formation and evolution. Observations show that the location of the radius valley decreases with decreasing […]
Posted inAstronomy & Telescopes, SETI & Technosignatures, Status Report, Stellar Cartography
A Proposal For Enhancing Technosignature Search Toward The Galactic Center
We discuss the possibility of enhancing intelligent life searches toward the Galactic center. From the clockwork orbital motions of stars around the Sgr A∗ black hole, we can determine the […]
Posted inAstrochemistry, Astronomy & Telescopes, Imaging & Spectroscopy, Interstellar, Press Release, Stellar Cartography
Three-year Study Of Young Stars With Hubble Enters A New Chapter
On the largest and one of the most ambitious Hubble Space Telescope programs ever executed, a team of scientists and engineers collected information on almost 500 stars over a three-year […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report, Stellar Cartography
Principles Of Heliophysics: A Textbook On The Universal Processes Behind Planetary Habitability
Heliophysics is the system science of the physical connections between the Sun and the solar system. As the physics of the local cosmos, it embraces space weather and planetary habitability.
Posted inAstrochemistry, Astronomy & Telescopes, Imaging & Spectroscopy, Interstellar, Status Report, Stellar Cartography
Astrochemistry At Work: A Star Is Born
Jets emerge from the cocoon of a newly forming star to blast across space, slicing through the gas and dust of a shining nebula in this new image from NASA’s […]
Posted inExoplanets, -moons, -comets, Gas Giants, Status Report, Stellar Cartography
Strong Correlation Between Inner Super-Earths And Outer Gas Giant
The connection between outer gas giants and inner super-Earths reflects their formation and evolutionary histories. Past work exploring this link has suggested a tentative positive correlation between these two populations, […]
Posted inAstronomy & Telescopes, Press Release, Stellar Cartography
NASA Tool Lets You See What Hubble And Webb Are Observing Right Now
It’s not hard to find out what NASA’s Hubble and James Webb space telescopes have observed in the past. Barely a week goes by without news of a cosmic discovery […]
Posted inAstronomy & Telescopes, Brown Dwarfs, Citizen Science / Open Science, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
89 New Ultracool Dwarf Co-Moving Companions Identified With The Backyard Worlds: Planet 9 Citizen Science Project
We report the identification of 89 new systems containing ultracool dwarf companions to main sequence stars and white dwarfs, using the citizen science project Backyard Worlds: Planet 9 and cross-reference […]
Posted inAstronomy & Telescopes, Status Report, Stellar Cartography
Partial Tidal Disruption Events: The Elixir Of Life
In our Galactic Center, about 10,000 to 100,000 stars are estimated to have survived tidal disruption events, resulting in partially disrupted remnants.