When astronomers first spotted a faint, fast-moving object racing through the outer Solar System in mid-2025, few expected it ...

Interstellar comet 3I-ATLAS is a rare cosmic visitor that may be older than our Sun, offering scientists a unique glimpse ...

In a few billion years, our Sun will become so violently hot that it could wipe out all life in the Milky Way. Yet, paradoxically, the same star that could destroy life may also help make distant ...

Stars are born in clusters. Some stay together as binaries, some drift apart and some are violently thrown out of the family. The Pleiades are young clustered blue stars being born from dust and gas.

NASA and the European Space Agency's Solar Orbiter spacecraft has sent home the highest resolution images of our sun ever captured. ESA has shared four images of the sun's surface, revealing the ...

Technically, the sun is a G-type main-sequence star — specifically, a G2V star. The "V" indicates that it is a dwarf, Tony ...

First, let’s discriminate between expansion and expulsion. Expansion happens because the thermal pressure from the increased energy production in the Sun’s interior exceeds the gravitational force ...