Sun's size shocker - Scientists challenge Solar System's central star measurement

The sun might be notably smaller than previously estimated, according to a pair of scientists who suggest that our Solar System's central star has not been accurately measured.

Astrophysicists Masao Takata from Tokyo University and Douglas Gough from Cambridge University assert that the Sun is a fraction smaller than previously believed. They propose that the radius of our central star is slightly less by a few hundredths of a percentage. While this might seem like a minor detail, it's certainly not negligible. This new understanding could significantly alter our perception of the radiant celestial body that sustains life on Earth.

The latest findings hinge on the analysis of sound waves created by the hot plasma churning within the Sun. Much like the noises emanating a grumbling stomach signifying changes in pressure, these reverberating sounds potentially provide a clearer view of the star's interior.

It's crucial to understand that the undulations seen on the Sun's surface originate from sound waves and gravitational waves. The gravitational waves are subdivided into two categories; g waves (closer to the core) and f waves (nearer to the surface). Earlier studies were primarily based on the f waves. However, the astrophysicists recommend a shift towards utilizing acoustic waves for more reliable data.

Instead of using visible light or making thermal calculations, Takata and Gough propose that seismic measurements should be the basis for determining the Sun's radius. The outcome of this approach indicates that the central star, however slightly, may be smaller. Regardless of the size difference, the crucial takeaway is that it provides an updated perspective of the Sun and could pave the way for more accurate star measurements in the future.

This groundbreaking information is currently being reviewed and has not yet been officially confirmed. You can find the preprint on arxiv.org..