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Fields and Topics
The branches of Space Science.
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When Hubble swings from one galaxy to another, engineers fire no thrusters—Hubble has none. They change the speeds of four internal reaction wheels, making the observatory rotate the opposite way, while magnetic bars push against Earth’s field to bleed off excess momentum: a propellant-free steering system used since 1990.
12+ min ago (634+ words) Hubble turns by trading angular momentum with four internal reaction wheels, then uses magnetic torquer bars to unload the momentum those wheels accumulate....
Grahaa Space accelerates launch plans for Earth-observation satellites
1+ hour, 42+ min ago (254+ words) Ramesh Kumar V, Co-founder & CEO, Grahaa Space Bengaluru-based Grahaa Space is stepping up its launch cadence after successfully putting its SOLARAS satellite into orbit aboard Skyroot’s Vikram-1, targeting two technology-demonstration missions in Q4 FY26 and Q1 FY27 and potentially three launches by the second…...
What Is Humanity’s Place in the Cosmos?
3+ hour, 43+ min ago (1467+ words) A lifelong fascination with terra incognita led the astrophysicist Priyamvada Natarajan to map out the universe’s most enigmatic phenomena....
Where does a planet end and a star begin? Webb found a free-floating brown dwarf only about twice Jupiter’s mass, surrounded by a disk of planet-forming material — an object with a planet’s mass that appears to have formed like a star.
4+ hour, 17+ min ago (1201+ words) Webb spectroscopy identifies a roughly two-Jupiter-mass IC 348 member with infrared excess from a disk, while spatial evidence favors star-like formation over planetary ejection....
Strange Seeds Appear to Be Growing Into Massive Black Holes
4+ hour, 45+ min ago (492+ words) Published Sep 20, 2026 8:00 AM EDT For years now, scientists have been puzzled by the existence of “little red dots” first showing up in observations by NASA’s James Webb Space Telescope. These objects appeared in a region they believe dates to just…...
Scientists outline how spacecraft could reach a nearby black hole within a century
4+ hour, 54+ min ago (1094+ words) A physicist outlines how laser-driven nanocraft could someday reach a nearby black hole and test gravity directly. (CREDIT: Wikimedia / AI-Generated / CC BY-SA 4.0) The idea would require a suitable black hole to be discovered surprisingly close to Earth, along with technologies…...
Trivandrum Observatory records shed new light on Carrington Event of 1859
5+ hour, 13+ min ago (363+ words) Updated - September 20, 2026 05:02 pm IST - THIRUVANANTHAPURAM A study based on historical magnetic observations from the Trivandrum Observatory has provided new insights into the Carrington Event of 1859, one of the most powerful geomagnetic storms ever recorded. The findings by Kerala University faculty…...
Black Hole “Burps” May Follow the Same Rule Across the Universe
5+ hour, 21+ min ago (242+ words) ...
Scientists opened a sealed envelope after 10 years. Gravity still didn’t make sense
6+ hour, 14+ min ago (1342+ words) A decade-long NIST experiment has produced a new measurement of the universal gravitational constant that differs unexpectedly from another leading result, deepening a 225-year-old physics puzzle. The discrepancy is tiny, but for one of nature’s most fundamental constants, it is…...
Twenty-two years of X-ray timing suggest the disk around pulsar 4U 1626−67 may have flipped from rotating backward to forward in 2008, turning years of spin-down into spin-up — though the evidence remains indirect.
6+ hour, 12+ min ago (1104+ words) A state-space analysis of 3,340 pulse-frequency measurements slightly favors a retrograde disk before 4U 1626−67's 2008 torque reversal, but a data gap and weak Bayesian odds keep the result indirect....