The binary decision-making framework outlined in Chapter 2 provides an alternative to probabilistic estimates of contamination constrained by the uncertain and/or unknowable factors included in the ...

A new NASA study reveals a surprising way planetary cores may have formed—one that could reshape how scientists understand the early evolution of rocky planets like Mars. Conducted by a team of ...

When we think of asteroids, we almost immediately think of giant rocks bouncing around like the iconic chase scene in "The Empire Strikes Back," and we often hear how they are remnants from the birth ...

Astronomers have discovered a massive new solar system body located beyond the orbit of Pluto. The weird elongated orbit of the object suggests that if "Planet Nine" exists, it is much further from ...

Pluto’s planetary status is under threat following the discovery by Caltech astronomers of an object more than half Pluto’s diameter in the Kuiper Belt. This belt is the collection of primordial icy ...

One of the three large new bodies discovered recently in the outer solar system is spinning so quickly it has stretched into a cigar shape, according to new observations. If confirmed, the strange ...