The interstellar object 3I/ATLAS—only the third ever detected passing through our Solar System—has surprised astronomers again. 🔹 Color Shift: As it approached perihelion, 3I/ATLAS changed color, appearing noticeably bluer. This likely reflects evolving chemistry in its coma: ionized gases like CO⁺ and CN fluoresce under solar radiation, while shifting dust‑to‑gas ratios alter its glow. 🔹 Non‑Gravitational Acceleration: Careful orbital fits now reveal that its path isn’t dictated by gravity alone. Just like comets in our own system, jets of sublimating ice appear to be giving it a tiny “rocket push,” nudging it off a purely gravitational trajectory. Why does this matter? Each interstellar object is a time capsule from another star system. By studying its changing colors and subtle accelerations, we’re learning how comets form and evolve in alien environments—and how similar (or different) they are to our own. 🔭 Keep watching: at around magnitude 9 near perihelion, 3I/ATLAS is within reach of small telescopes and strong binoculars under dark skies. Reference: Qicheng Zhang et. al, Rapid Brightening of 3I/ATLAS Ahead of Perihelion, arXiv:2510.25035 (astro-ph), DOI: 10.48550/arXiv.2510.25035 #3IATLAS #InterstellarComet #Astronomy #SpaceScience #Outgassing #CosmicVisitor #scrolllink

𝐈𝐧𝐭𝐞𝐫𝐬𝐭𝐞𝐥𝐥𝐚𝐫 𝐉𝐞𝐭 𝐟𝐫𝐨𝐦 𝐖𝐞𝐛𝐛 What's at the tip of this interstellar jet? First let's consider the jet: it is being expelled by a star system just forming and is cataloged as Herbig-Haro 49 (HH 49). The star system expelling this jet is not visible -- it is off to the lower right. The complex conical structure featured in this infrared image by the James Webb Space Telescope also includes another jet cataloged as HH 50. The fast jet particles impact the surrounding interstellar gas and form shock waves that glow prominently in infrared light -- shown here as reddish-brown ridges. This JWST image also resolved the mystery of the unusual object at HH 49's tip: it is a spiral galaxy far in the distance. The blue center is therefore not one star but many, and the surrounding circular rings are actually spiral arms. #astronomy #space #stars #NASA #Webb #scrolllink

Which one has the biggest ring system? Chariklo vs Uranus vs Saturn vs J1407b #Shorts #Space #Planet #Scariest #events #Earth #Astronomy #Science

नया खोजा गया एक्सोप्लैनेट TOI-4465 b ने खगोलविदों को हैरान कर दिया है! यह एक विशाल गैस जायंट है, जो बृहस्पति से 25% बड़ा, लगभग 6 गुना भारी और 3 गुना घना है। पृथ्वी से करीब 400 प्रकाश वर्ष दूर, यह अपने सूर्यनुमा तारे की परिक्रमा 102 दिनों में पूरा करता है। इसकी अंडाकार कक्षा की वजह से तापमान 200°F से 400°F तक झूलता रहता है – ठंडा जुपिटर और गर्म जुपिटर के बीच एक पुल! TESS मिशन ने इसे ढूंढा, और वैज्ञानिक अब इसके वायुमंडल का अध्ययन करने को उत्सुक हैं। क्या यह ग्रहों के निर्माण की नई कहानी बताएगा? #Exoplanet #Space #Astronomy #TOI4465b #NASA