This isotope is found at a ratio of about one per 2,500 helium-4 ions, the latter being the common version of helium.

Our solar system was formed about four and a half billion years ago, from a massive cloud of gas and dust which collapsed on ...

A new model has been developed to simulate interstellar activity within our solar system and the nearby Alpha Centauri system ...

The Sun is approaching the final years ahead of its solar maximum, or the apex of its 11-year cycle when its activity will peak and its poles will flip. Its wild activity has already been seen and ...

The NASA/ESA Solar Orbiter recently recorded the highest-ever concentration of a rare helium isotope (3He) emitted from the ...

A powerful solar storm has delivered a dramatic blow to Jupiter’s magnetosphere, revealing that even the largest planet in ...

The average science project doesn't do the Solar System justice. This video shows relative sizes of the planets and how far ...

Explore the distant future of our solar system as our Sun gradually cools and fades into a black dwarf. Vice President JD ...

Webb Telescope Captures Its First Direct Images of Carbon Dioxide Outside Solar System Mar. 17, 2025 — The James Webb Space Telescope has captured its first direct images of carbon dioxide in a ...

The Sun is constantly spewing solar wind, a stream of charged particles, into interplanetary space. Occasionally, it bursts ...