TOI-201 is one of the few systems whose changes can be observed by humans in real time.

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

Interstellar comet 3I/ATLAS showed changes in its gas composition after passing close to the sun, offering data on its ...

Where you are in the solar system changes just how much of an effect the Sun has on you. For Earth, the Sun can cause bright aurorae that can extend down into the mid-latitudes. For comets, the ...