Pluto's 'almost twin' dwarf planet Eris has a rocky core blanketed by an icy shell, which appears to be flexing slowly.
Wind tunnels show what a probe descending into the atmosphere of Uranus or Neptune would probably need to contend with. Such a probe is a high-priority mission for both NASA and ESA.
A new supercomputer simulation reveals why spiral galaxies like our Milky Way are strikingly scarce in our pocket of the universe.
Researchers have simulated how comets pinballing from one planet to another could deliver critical organic molecules to exoplanets.
NASA has begun construction has started on SPHEREx, a new extraordinary mission that will map the sky in unprecedented detail and color.
Several exoplanets at the edge of our galaxy could have formed continents — and advanced life — 5 billion years earlier than Earth, new research suggests.
Data from the Surface Water and Ocean Topography (SWOT) satellite was used to map surface heights of the planet's oceans and freshwater lakes and rivers.
The James Webb Space Telescope has explored the Crab Nebula in more detail than ever before, hunting for clues about how this supernova remnant was created
James Webb Space Telescope could have explained the mysterious signals from ‘hell planet’ 40 light-years away
The hellish super-Earth '55 Cancri e' may be constantly losing and re-growing its atmosphere, a new study of the planet's strange transit signals suggests.
Naturally occurring superheavy elements beyond those listed in the periodic table could potentially explain why asteroid 33 Polyhymnia is so dense, new research suggests.