Parker Solar Probe observed switchbacks — traveling disturbances in the solar wind that caused the magnetic field to bend back on itself — an as-yet unexplained phenomenon that might help scientists uncover more information about how the solar wind is accelerated from the Sun. Credit: NASA’s Goddard Space Flight Center/Conceptual […]

An illustration shows NASA’s Juno spacecraft as it entered orbit of Jupiter on July 4, 2016, after traveling for nearly five years and more than 1.7 billion miles. Credit: NASA/JPL/SwRI Data from the NASA spacecraft’s journey to Jupiter suggests that Mars may be shedding dust into interplanetary space. Look up to the night sky just before […]

A rendering of Parker Solar Probe as it circles the sun—closer to a star than any spacecraft has ever ventured. Credit: NASA/Johns Hopkins APL/Steve Gribben During Parker Solar Probe’s seventh swing by the Sun, culminating in its closest solar approach, or perihelion, on January 17, 2021, celestial geometry posed a […]

High-resolution illustration of the Roman spacecraft against a starry background. Credit: NASA NASA’s Nancy Grace Roman Space Telescope will be able to explore even more cosmic questions, thanks to a new near-infrared filter. The upgrade will allow the observatory to see longer wavelengths of light, opening up exciting new opportunities […]

The chromosphere, photographed during the 1999 total solar eclipse. The red and pink hues – light emitted by hydrogen – earned it the name chromosphere, from the Greek “chrôma” meaning color. Credit: Luc Viatour For decades after its discovery, observers could only see the solar chromosphere for a few fleeting […]

ANIMATION Using data from facilities including NASA’s Neil Gehrels Swift Observatory and Transiting Exoplanet Survey Satellite (TESS), scientists have studied 20 instances and counting of regular outbursts of an event called ASASSN-14ko. Astronomers classify galaxies with unusually bright and variable centers as active galaxies. These objects can produce much more energy […]

High-resolution illustration of the Roman spacecraft against a starry background. Credit: NASA’s Goddard Space Flight Center When it launches in the mid-2020s, NASA’s Nancy Grace Roman Space Telescope will explore an expansive range of infrared astrophysics topics. One eagerly anticipated survey will use a gravitational effect called microlensing to reveal thousands […]

Scientists used image processing on high-resolution images of the Sun to reveal distinct “plumelets” within structures on the Sun called solar plumes. The full-disk Sun and the left side of the inset image were captured by NASA’s Solar Dynamics Observatory in a wavelength of extreme ultraviolet light and processed to […]

This Hubble Space Telescope portrait reveals the gaseous remains of an exploded massive star that erupted approximately 1,700 years ago. The stellar corpse, a supernova remnant named 1E 0102.2-7219, met its demise in the Small Magellanic Cloud, a satellite galaxy of our Milky Way. Credit: NASA, ESA, and J. Banovetz […]

Credit: NASA’s Goddard Space Flight Center/SDO/Joy Ng   ANIMATION On January 13, 2021, NASA’s Solar Dynamics Observatory, or SDO, experienced its first lunar transit of the year when the Moon crossed its view of the Sun. The transit lasted about 30 minutes, between 12:56 and 1:25 a.m. ET. During this time, the […]