Astronomy and Astrophysics

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An illustration shows Earth on the right side of the image. Concentric blue curves that represent the magnetic field emanating from it. The outer edge of the blue curves is labeled “magnetosheath,” and a bright blue parabolic curve just beyond that is labeled “bow shock.” An orange cloud spanning the width of the image is labeled “solar wind.” A spacecraft on the left side of the image, far outside the bow shock, is labeled “Wind.” Another spacecraft positioned closer to Earth, between the bow shock and magnetosheath, is labeled “THEMIS.”
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Geomagnetic storms could get worse than we thought
SEP 01, 2026
A person in protective gear stands to the left of a large reflective mirror in a laboratory.
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The Roman Space Telescope isn’t the only US observatory built from spy tech
AUG 28, 2026
Swirling vortices are clumped together on the surface of the Sun in colors that range from bright yellow to dark orange and black.
Back Scatter
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A close-up of the Sun
AUG 21, 2026
A diagram shows data points charted onto a trend curve. The horizontal axis is wavelength in microns. The vertical axis is the fraction of starlight blocked by the transiting planet. Green vertical bars intersect the curve’s peaks.
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Life beyond stellar death for an unusual exoplanet
JUL 29, 2026
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Slow-forming core could have fueled Ganymede’s dynamo
JUN 11, 2026
Two circular maps illustrate colorized x-ray measurements of the sky. The left panel shows 0.3–0.6 keV x rays in red, 0.6–1.0 keV x rays in green, and 1.0–2.3 keV x rays in blue and show a horizontal strip of blue across the center of the circle, with green at some of its edges and beyond. The circles have cloudlike oranges and reds around the tops and bottoms. The right panel shows x rays from 0.27–0.7 keV in orange. The orange lines are curved and radiating out from a central point.
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Separating signals in the soft x-ray sky
JUN 02, 2026
PT-00008_JD_sunrise_over_drill_camp_ibodo_22244ab613.jpg
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IceCube expands neutrino search to spot fainter signals
MAR 25, 2026
Project Hail Mary
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Science inspires, but does not limit, Andy Weir’s fiction
MAR 19, 2026
A pulsed-power driven magnetic reconnection experiment.
Features
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Making magnetized plasmas in the lab
FEB 04, 2026
A grid of six color images shows different angles of Saturn’s moon Titan as captured by Cassini.
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Data reanalysis throws existence of an ocean on Titan into question
FEB 02, 2026
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NASA’s next space telescope reaches assembly milestone
JAN 12, 2026
An image of two galaxies includes light trails that crisscross the image.
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As satellite population surges, so does the impact on astronomy
JAN 08, 2026