The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously thought, astronomers say.

The map, spanning 4,000 light-years from the sun in all directions, combines a chart of space dust with the effects of a rare type of young, hot star.

An international team of scientists has unveiled the Flagship 2 galaxy mock-up. No, it's not a cardboard diorama for a school ...

In fact, the Euclid Consortium, the international group managing the European Space Agency's Euclid space telescope, just published the world's most extensive simulation of the universe. It maps an ...

The comet, named 3I/ATLAS, is only the third confirmed interstellar object ever seen in our solar system. That means it came ...

A NASA mission to study the heliosphere—the sun's magnetic bubble that shields our solar system—and develop a better ...

The methane gas may constitute a rarefied atmosphere, or it may come from erupting plumes on Makemake’s surface.