Learn what yardangs are, how wind abrasion and deflation carve them, how they differ from dunes, and what Curiosity's 2026 Mars observations reveal about long-term erosion.
Learn why the Shrimp Nebula Sh2-188 is strongly asymmetric, how stellar winds and motion through interstellar gas create a bow shock and what models can reveal.
Learn why satellites in low Earth orbit can lose altitude, how solar activity changes atmospheric drag, how reboosting works and why orbital decay eventually leads to re-entry.
Learn how astronomers combined spectra from more than 200,000 galaxies to estimate the Universe’s average visible colour, why an early turquoise result was corrected and what Cosmic Latte really means.
Discover why astronomers study the far-infrared universe, how cosmic dust changes what we see and what NASA’s proposed PRIMA mission is designed to investigate.
Learn the physics of gravity assists, reference frames and planetary flybys, with ESA Juice’s September 2026 Earth encounter as a current example.
Astronomy images often look dramatically different after processing. Learn what calibration, alignment, stacking, noise correction and stretching actually do—and where responsible processing ends and misleading manipulation begins.
Learn what Omega Centauri is, how globular clusters differ from galaxies and open clusters, why its stellar populations are unusual, and how astronomers use stellar motions to search for hidden black holes.
ESA's JUICE spacecraft will fly past Earth again in September 2026. Learn how gravity assists change spacecraft speed and direction without creating energy from nothing.
Learn what a supernova remnant is, how blast waves create shells and filaments, what glowing hydrogen and oxygen reveal, and why overlapping nebulae may be unrelated.
Elias 2-24 b is less than one million years old and still embedded in its birth disc. Learn how astronomers confirmed it and why the discovery challenges planet-formation models.
A gravitational lens can make one supernova appear at different times. Learn how multiple light paths create time delays and why Athena may help measure cluster mass and cosmic expansion.