Nature Hub

     From :- Space.Com  By :-  By  Keith Cooper  Editted by :_ Amal Udawatta An artist's impression of the galaxy cluster in the very early universe. Containing about 30 galaxies including three with supermassive black holes (depicted here with jets), the cluster is filled with an extraordinarily hot gas (illustrated here in red).   (Image credit: Lingxiao Yuan.) The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about how these cities of galaxies form. A seemingly impossible cluster of more than 30 galaxies crammed into a volume just 500,000 light-years across has been found in the universe just 1.4 billion years after the Big Bang  —  and with a temperature that breaks all the rules. The discovery, by astronomers using Chile's Atacama Large Millimeter/submillimeter Array ( ALMA ), of the  galaxy  cluster labeled SPT2349-56 challenges our understanding of how quickly gal...

  By :- Amal Udawatta On January 10, 2026, Jupiter will be at opposition, meaning it will be directly opposite the Sun. This means that Jupiter, Earth, and the Sun will be in a straight line. At this time, Jupiter will be closest to Earth and will be the brightest object in the night sky. That is, it will be visible to the naked eye as a very bright blue-white star. If you have a medium or powerful telescope, you will also be able to observe the positions of Jupiter's major moons, Io, Europa, Callisto, and Ganymede. Fun fact: Oppositions occur roughly once every 13 months for Jupiter, but each year the planet reaches a slightly different distance from Earth. This year, it will be at its closest and brightest, offering the best viewing of 2026. At the moment of opposition, Jupiter will lie at a distance of 4.23  AU , and its disk will measure 45.6  arcsec  in diameter, shining at  magnitude  -2.7. At opposition, its celestial coordinates will be ...

    From:- Sky & Telescope    By :- J. Kelly Beatty   Editted by :- Amal Udawatta Dazzling Jupiter and the brilliant stars of Orion, the Hunter — as well as Sirius and Procyon — dominate the eastern sky during January evenings. We’ll want to make good on that pledge right away, because our first opportunity occurs early in January, with the arrival of the Quadrantid meteor shower. These meteors get their name from Quadrans Muralis, an obsolete constellation near the handle of the Big Dipper. Unfortunately this year the peak arrives in the Americas on the afternoon of January 3rd — and there’s a full Moon that night. Bummer! Of the five planets visible by eye, three of them — Mercury, Venus, and Mars — are bunched closely together very close to the Sun in the sky and thus out of view this whole month. That leaves Jupiter and Saturn to entertain us. Right now Saturn is fairly high in the southwest after even twilight fades. Meanwhile, Jupiter reaches what’s ca...