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Highest-ever resolution images of the Sun from NASA.

This artist's concept shows a brown dwarf, an object that is at least 13 times the mass of Jupiter but not massive enough to begin nuclear fusion in its core, which is the defining characteristic of a star. Scientist using NASA's Spitzer Space Telescope recently made the first ever direct measurement of wind on a brown dwarf.

Cosmic expansion measured across the sky.

This illustration shows how some of the light coming from a disk around a black hole is bent back onto the disk itself due to the gravity of the hefty black hole. The light is then reflected back off the disk. Astronomers using data from NASA's now-defunct Rossi X-ray Timing Explorer (RXTE) mission were able to distinguish between light that came straight from the disk and light that was reflected. The bluish material coming off the black hole is an outflowing jet of energetic particles.

A new “refrigerator” super-cools molecules to nanokelvin temperatures. The technique may enable more complex, molecule-based quantum computing.

This visualization shows the magnetic field around Earth, or the magnetosphere. Earth’s magnetic field origins are still a mystery, a new MIT study finds.

Artist's impression of an active galaxy sporting a relativistic jet.

New EHT Images Reveal a Writhing Relativistic Jet Deep in the Heart of Black Hole System

Figure 1. Under electromagnetic duality, an electrically charged particle is mapped to a magnetic monopole, and vice versa. The form of the Maxwell equations is preserved by this operation.

Unusual ozone hole opens over the Arctic.