An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how ...

Finding Earth’s exact position in the galaxy took centuries of observation and innovation. This story follows astronomers as ...

In 2017, something entered our solar system that wasn’t supposed to exist. It moved too fast, accelerated when it should have ...

An astrophysicist who discovered water on another planet beyond our solar system was fatally shot outside his home this week. 67-year-old Carl Grillmair had worked with Caltech’s Infrared Processing ...

The McAninch Arts Center (MAC) will present the TheaterWorksUSA production of “The Magic School Bus: Lost in the Solar System ...

In late winter, the zodiacal light is visible in the evening in the Northern Hemisphere (false dusk) and in the pre-dawn ...

An exoplanetary system about 116 light-years from Earth could flip the script on how planets form, according to researchers ...

Long strands of glowing gas stretch behind a distant galaxy, dotted with pockets of newborn stars. The shape looks almost ...

Astronomers have found growing evidence that runaway black holes are hurtling through galaxies at extreme speeds, leaving ...

Astronomers have just identified what appears to be a cosmic anomaly: a faint galaxy with so few visible stars that, according to calculations, as much as 99.9 percent of its mass is dark matter. The ...

An accomplished CalTech astrophysicist with more than four decades of research contributions in galactic astronomy and the ...

In a conventional system like our own, rocky planets such as Mercury, Venus, Earth, and Mars orbit closest to the host star. Farther out, gas giants ...