Gaia-4b, a giant exoplanet orbiting a small star, is the first planet confirmed using Gaia’s astrometric technique.

According to the radial diffusion model, electrons are transported to within 2.5 Earth radii (Re) during magnetic storms from a reservoir of particles beyond geostationary orbit at 6.6 Re.

They will just move directly on the line towards each other. That's a purely radial orbit," said Chris Mihos, an astronomer ...

Is Earth really exceptional?  A new book seems to reaffirm that notion.  But given the right conditions, primitive life may be a mere byproduct of biophysics.

Using in part the NEID spectrograph mounted on the WIYN 3.5-meter Telescope at the U.S. National Science Foundation Kitt Peak National Observatory, a Program of NSF NOIRLab, a team of astronomers have ...

The ESA’s Gaia mission mapped the positions and velocities of stars with extreme precision by measuring about one billion ...