Sun
The Sun is the star located at the solar system’s center. Its gravity holds the solar system as a whole together. It accounts for about 99.86% of the total solar system’s mass.
Hydrogen is about 73% of the Sun’s total mass; the rest is mostly Helium (25%), with a small quantity of oxygen, carbon, neon, and iron. The hottest part of the Sun is its core, where temperatures top 27 million degrees Fahrenheit (15 million degrees Celsius).
The core is the place where it generates enormous amounts of energy through the nuclear fusion reaction. It mainly radiates energy through visible light, ultraviolet, and infrared radiation.
Coronal mass ejections (CMEs) could be more extreme than previously thought
Solar storms could be more extreme if they ‘slipstream’ behind each other.
Parker Solar Probe is gonna make a record-breaking approach to the sun today
This flyby will also be the first time that the probe will pass within 0.1 AU of the sun.
Astrophysicists found distinctive signatures of a black hole event horizon
Cosmic X-rays reveal an indubitable signature of black holes.
Solar ripples could tell us a lot about flares
It may someday help in forecasting the size of solar flares and their severity.
New insights into the lives of massive stars
A stellar evolution code called METhod of Interpolation for Single Star Evolution (METISSE).
Take a look at astonishing images of the intricate structure of the sun
Unprecedented images of the fine-structure of the Sun.
100 cool worlds discovered near the Sun
Citizen scientists help locate some of the coolest brown dwarfs ever discovered.
Scientists measured the global magnetic field of the solar corona
A wonderful demonstration of how we can exploit the Alfvén waves.
NASA sounding rocket discovered helium structures in the solar corona
It will help scientists better understand our space environment.
The quiet Sun is much more active than previously assumed
The quiet Sun has been studied considerably less than the active Sun.