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Ο Κόκκινος Πλανήτης

Ψηφιακή Παράσταση.  Σήμερα, ο Άρης μοιάζει πιο κρύος από την Αρκτική και πιο άνυδρος από την Σαχάρα. Σύμφωνα, ωστόσο, με όλες τις ενδείξεις, ο πλανήτης αυτός ήταν κάποτε αρκετά πιο θερμός, με πυκνή ατμόσφαιρα και νερό που σχημάτιζε λίμνες και θάλασσες. Η εξερεύνηση του κόκκινου πλανήτη συνεχίζεται και κάποια στιγμή οι πρώτοι αστροναύτες θα περπατήσουν […]

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  • Solving Asteroid Bennu's Mysteries 17 Μαρτίου 2026
    These X-ray computed tomography (XCT) scans of particles from asteroid Bennu show the most common types of crack networks observed in Bennu samples.
  • Celebrating 100 Years Since Goddard’s Breakthrough Moment in Modern Rocketry 16 Μαρτίου 2026
    Dr. Robert H. Goddard and a liquid oxygen-gasoline rocket in the frame from which it was fired on March 16, 1926, at Auburn, Mass.
  • Good Morning, Moon 13 Μαρτίου 2026
    Early morning sunlight illuminates the western wall of this unnamed crater, leaving deep shadows on the ground and in the interior. The image was taken on August 30, 2023, by LROC (Lunar Reconnaissance Orbiter Camera).
  • Webb Spots Details in Nearby Spiral Galaxy 12 Μαρτίου 2026
    Two powerful instruments of the NASA/ESA/CSA James Webb Space Telescope joined forces to create this scenic galaxy view. This spiral galaxy is named NGC 5134, and it’s located 65 million light-years away in the constellation Virgo.
  • Telescopes Team Up for New View of Cat's Eye Nebula 11 Μαρτίου 2026
    In Euclid’s wide, near-infrared, and visible light view, the arcs and filaments of the nebula’s bright central region are situated within a halo of colorful fragments of gas zooming away from the star. This ring was ejected from the star at an earlier stage, before the main nebula at the center formed. Hubble captures the […]
  • Celebrating NASA's Mars Reconnaissance Orbiter's 20th Anniversary: Crater Near Sirenum Fossae 10 Μαρτίου 2026
    This impact crater, as seen by NASA's Mars Reconnaissance Orbiter in 2015, appeared relatively recent as it has a sharp rim and well-preserved ejecta.
  • Webb Studies Cranium Nebula 9 Μαρτίου 2026
    A brain-new image from Webb! What looks like a brain (complete with what appear as left and right hemispheres) is actually a dying star blowing off a shell of gas, and within that shell, a cloud of various gases.
  • Weekends on the Space Station 6 Μαρτίου 2026
    Weekends on the International Space Station are for housecleaning and haircuts. NASA astronaut Jessica Meir trims the hair of fellow NASA astronaut Jack Hathaway, both Expedition 74 flight engineers, using an electric razor attached to a vacuum that collects loose clippings to keep the station’s atmosphere clean in microgravity.
  • Total Lunar Eclipse 5 Μαρτίου 2026
    A total lunar eclipse rises over New Orleans, home of NASA’s Michoud Assembly Facility, in the early morning hours of Tuesday, March 3. A lunar eclipse occurs when Earth passes directly between the Sun and Moon, casting a huge shadow across the Moon’s surface. The Moon appears dark red or orange as the Sun’s light […]
  • Blowing Stellar Bubbles 4 Μαρτίου 2026
    For the first time, a much younger version of the Sun has been caught red-handed blowing bubbles in the galaxy, by astronomers using NASA’s Chandra X-ray Observatory.

Σαν σήμερα

17/3/1821: Οι πρόκριτοι της Μάνης, υπό την αρχηγία του Πετρόμπεη Μαυρομιχάλη, υψώνουν τη σημαία της επανάστασης στο χωριό Τσίμοβα (σημερινή Αρεόπολη) της Λακωνίας.
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