Wednesday, Feb 18, 2026

Credit: NASA/SDO

Tuesday, 10 February 2026

Strong Solar Flare

This Feb. 4, 2026, image from NASA’s Solar Dynamics Observatory (SDO) captures a strong solar flare erupting from the star. Solar flares are powerful bursts of energy that, along with other types of solar eruptions, can impact radio communications, electric power grids, and navigation signals and pose risks to spacecraft and astronauts. The flare pictured was classified as an X4.2 flare. X-class flares are the most intense, and the number provides more information about their strength.

SDO measures the Sun’s properties and solar activity to help us better understand the Sun’s magnetic changes. By studying flares and how they affect our planet and nearby space, SDO helps us better prepare for and respond to these potential disruptions.

Credit: NASA/STScI/A. Pagan

Wednesday, 11 February 2026

JWST Reveals Dark Matter

This image from NASA’s James Webb Space Telescope, containing nearly 800,000 galaxies, is overlaid with a map of dark matter, represented in blue. Brighter blue areas indicate a higher density of dark matter. Researchers used JWST data to detect dark matter — which is invisible — through its gravitational influence on ordinary matter.

The area of sky shown here is 0.54 square degrees (about 2½ times the size of the full Moon) and located in the constellation Sextans. Webb’s Near-Infrared Camera (NIRCam) peered at this region for a total of about 255 hours.

Credit: Contains modified Copernicus Sentinel data (2025), processed by ESA

Thursday, 12 February 2026

Olympic View

The Copernicus Sentinel-2 mission brings us a striking view of northern Italy, highlighting several key Olympic venues for the 2026 Winter Olympics.

Also known as the Milano Cortina Games, this year’s Olympics are geographically widespread, with events taking place simultaneously in different regions and venues across northern Italy, including Milan, Bormio, Livigno, Anterselva, Cortina d’Ampezzo, Predazzo, Tesero, and Verona.

The upper part of this cloud-free image is dominated by the Alps' mountains and valleys, where most venues are located.

To the northeast lies Cortina d’Ampezzo, the town that lends its name to this year’s Games. Often called the Pearl of the Dolomites, Cortina sits at the heart of these dramatic mountains, also a UNESCO World Heritage site. A renowned winter sports resort, Cortina also hosted the 1956 Winter Olympics.

Credit: A. Trigo/ESO

Friday, 13 February 2026

The Marvels of Paranal

This picture shows the full scope of Paranal’s beauty. Cerro Paranal in Chile’s Atacama Desert, the mountain peak home to ESO’s Very Large Telescope (VLT), is a site of many marvels. And this panoramic image taken by Chilean astrophotographer Alexis Trigo certainly captures them all.

But the telescopes are not the only marvel that stands out in this picture: the dark sky in the background is just as striking, with the centre of the Milky Way shining to the left. This view is unfortunately polluted by many “scratches” caused by satellite megaconstellations, a growing threat for astronomy that ESO is working hard to mitigate.

Credit: NASA/JPL-Caltech/SSI/CICLOPS/Jason Major

Friday, 6 February 2026

Saturnian Squiggle

This very impressive, and little-known, image of a meandering squiggle of high-altitude clouds on Saturn was captured by the Cassini spacecraft on July 18, 2010. It almost looks like one of these fancy latte art designs!

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