Mercury is tiny, barely bigger than the Moon. Its metallic core makes up 70% of the planet’s mass, vastly exceeding Earth’s 32% and Mars ’ 25%. It’s unlikely that the core actually formed like this.

For decades, Uranus baffled scientists because it seemed to have no internal heat. Now, new computer modeling shows the planet actually emits more energy than it receives from the Sun. This subtle ...

Scientists witness planetary evolution in action as WISPIT 2b emerges within a cosmic nursery hundreds of light-years away.

Astronomers using the James Webb Space Telescope are unraveling the mysteries of TRAPPIST-1e, an Earth-sized exoplanet 40 light years away that could harbor liquid water. Early data suggests hints of ...

Northern lights, or auroras, are not exclusive to Earth. Astronomers have already detected this phenomenon on most planets and many moons in our solar system. Now, an international research team has ...

Titan’s atmosphere tilts and shifts seasonally. The discovery shapes future exploration. Researchers at the University of Bristol have uncovered unusual behavior in Titan’s atmosphere for the first ...

Scientists have gotten a never-before-seen look at an area around a large exoplanet 625 light-years away where moons like the one orbiting Earth could potentially form. Using data from NASA’s James ...

Featured in this image from the NASA/ESA Hubble Space Telescope is a lenticular galaxy called NGC 4753 with intricate cosmic dust structures. Here on Earth, dust is a collection of small particles ...

What kinds of planet does a solar system cook up? It depends on the ingredients you throw in. Astronomers report that the planets that arise around a star can have a vast array of structures that ...

In the 17th century, astronomers Christiaan Huygens and Giovanni Cassini trained their telescopes on Saturn and uncovered a startling truth: the planet's luminous bands were not solid appendages, but ...

The striking thing about this is that repeating the procedure on the star turned up no evidence of carbon-based chemicals, even though the system is young enough that it should still have a ...

New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure if the gas is contained within a wispy atmosphere or being ejected into ...