The seven rocky planets of TRAPPIST-1 seem to have very similar compositions

This illustration shows three possible interiors of the seven rocky exoplanets in the TRAPPIST-1 system, based on precision measurements of the planet densities. Overall the TRAPPIST-1 worlds have remarkably similar densities, which suggests they may share the same ratio of common planet-forming elements. The planet densities are slightly lower than that of Earth or Venus, […]

The seven rocky planets of TRAPPIST-1 seem to have very similar compositions

IMAGE: This illustration shows three possible interiors of the seven rocky exoplanets in the TRAPPIST-1 system, based on precision measurements of the planet densities. Overall the TRAPPIST-1 worlds have remarkably… view more  Credit: NASA/JPL-Caltech A new international study led by astrophysicist Eric Agol from the University of Washington has measured the densities of the seven planets […]

Cyprus rocky testing ground for Mars

Planetologists and geologists arrived in Cyprus to test out the equipment in the Troodos mountains, which officials say has geological similarities with Mars International and Cypriot experts on Friday discussed a research project to test space equipment on the Mediterranean island before sending it to Mars to measure the age of its rocks, officials said. […]

Supersonic winds, rocky rains forecasted on lava planet

At the center of the large illuminated region there is an ocean of molten rock overlain by an atmosphere of rock vapour. Supersonic winds blow towards the frigid and airless nightside, condensing into rock rain and snow, which sluggishly flow back to the hottest region of the magma ocean. Credit: Julie Roussy, McGill Graphic Design […]