The curious minds at What If explore a brand new planet forming inside our solar system, imagining its effects on orbits, gravity, and cosmic dynamics.

New simulations suggest Jupiter holds far more water than once thought, reshaping ideas about how the largest planet formed.

Scientists may need to broaden their horizons in their search for alien life.

Using data collected by NASA's Parker Solar Probe during its closest approach to the sun, a University of Arizona-led ...

Although Mercury was geologically active in its early days, today its surface appears almost completely static. This is why ...

Jupiter looks familiar from a distance, but beneath its clouds lies something profoundly alien. New data has overturned ...

Recently, a group of scientists created a detailed map of this space, showing that the bubble is lopsided in both shape and ...

A decade of observations of four planets around the young planetary system V1298 Tau revealed a rare, long-sought missing link in planet formation.

Mars is absolutely dripping with evidence that the red planet was once a striking blue, complete with glistening lakes, snaking rivers, and vast oceans. Now, scientists have calculated the 'sea level' ...

The Times' popular Games unit is debuting Crossplay, a Scrabble-like electronic feature that represents its first designed ...

If someone tried to put a price tag on Earth, what would that number even be based on? Land, oceans, ecosystems, raw ...