Stars and Stellar Evolution
5 reportsEvidence from main sequence is checked against stellar mass and white dwarf. The discussion considers how stars form and how stellar ages are estimated, comparing competing models without treating agreement as proof of mechanism.
Webb Telescope Detects Hidden Giant Planet in Beta Pictoris System
Astronomers have identified a third giant exoplanet in the Beta Pictoris system using the James Webb Space Telescope's spectroscopic capabilities, revealing a world previously concealed by the system's bright debris disk
Metasurface Grating Demonstrates Compact Solar Magnetic Field Mapping
A polarization-sensitive metasurface grating has matched conventional instruments in mapping solar magnetic fields, offering a route to smaller, simpler, and potentially more robust hardware for future space-based solar telescopes
NASA's IXPE Maps Magnetic Field of Unusual Pulsar in Milky Way
Astronomers have used NASA's Imaging X-ray Polarimetry Explorer to directly map the magnetic field around the pulsar PSR J1101-6101, revealing how high-energy particles stream through the Milky Way and testing long-standing theoretical predictions
Total Solar Eclipse and Perseid Meteor Shower Align on 12 August 2026
On 12 August 2026, a total solar eclipse will cross parts of Greenland, Iceland, and Spain, coinciding with the Perseid meteor shower and a prominent Venus. Observers in North America and Europe will experience rare overlapping astronomical events
Hidden White Dwarfs Detected Near Earth in Red Dwarf Binaries
Astronomers have identified four white dwarfs concealed by red dwarf companions within 65 light-years, using ultraviolet observations from the Hubble Space Telescope to reveal these elusive stellar remnants