Science & Technology Current Affairs MCQs

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Researchers discovered a new type of brain cell called Ovoid cells. These neurons help in recognition memory by differentiating between new and familiar objects. They are named for their egg-like shape and are found in the hippocampus of humans, mice, and other animals. Ovoid cells activate when encountering something new, triggering memory storage. This discovery could help treat brain conditions like Alzheimer’s, Autism Spectrum Disorder, and Epilepsy.

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Researchers found that bacterial cellulose can be used as a bandage to help plants heal and regenerate faster. It is a natural polymer produced by certain bacteria. It has unique properties that make it effective for plant wound care. Bacterial cellulose bandages offer a sustainable alternative to chemical treatments. This method supports healthier plant growth and eco-friendly farming. It enhances plant healing, leading to better crop yields and resilience. This breakthrough integrates biotechnology into agriculture, promoting sustainable farming and food security.

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NASA is preparing for the PUNCH mission, a first-of-its-kind solar mission to study the solar atmosphere. PUNCH (Polarimetry to Unify the Corona and Heliosphere) will be launched by SpaceX. It consists of four suitcase-sized satellites, each weighing 64 kg, placed in Low Earth Orbit (LEO). The mission will use three Wide Field Imagers and one Narrow Field Imager to capture polarised and unpolarised images. It will provide 3D measurements of the corona and solar wind using light polarisation. The data will help improve space weather predictions and protect space missions. The mission is expected to last two years.

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The Solar Ultraviolet Imaging Telescope (SUIT) on Aditya-L1 detected an X6.3-class solar flare, a highly intense solar eruption. SUIT is a remote sensing payload on ISRO’s Aditya-L1, India’s first solar mission. The mission was launched on September 2, 2023. Solar Ultraviolet Imaging Telescope (SUIT) is developed by Inter-University Center for Astronomy and Astrophysics (IUCAA), Pune with ISRO. SUIT captures full-disk and region-specific images of the Sun. It uses 11 calibrated filters across 200-400 nm wavelengths to study the Sun’s layers. It is positioned at Lagrange Point. It observes the Sun 24×7. SUIT studies solar atmosphere dynamics, focusing on jets, flares, filament evolution, and eruptions.

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A study suggests Mars’ red color may be due to the iron-containing mineral ferrihydrite. Ferrihydrite is a poorly crystalline nanomineral made of 20% (FeO₄) and 80% (FeO₆) polyhedra. It forms through rapid oxidation and hydrolysis and exists in a disordered structure. It is an initial corrosion product of iron, leading to goethite and hematite formation. Found in soils, weathered rocks, and around iron-rich springs, especially with iron-metabolizing bacteria. It traps water, protects organic molecules, and forms rapidly in cool water. Present in meteorites as a pre-terrestrial weathering product.

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NASA launched the SPHEREx and PUNCH space missions on March 12, 2025 from Vandenberg Space Force Base, California, after multiple delays. SPHEREx successfully separated from Falcon 9 in the second stage and entered a sun-synchronous orbit 650 km above Earth. It will study 450 million galaxies and 100 million stars, creating a 3D map of the sky to understand the history of the universe. PUNCH, a solar mission with four satellites, will study the solar corona, solar winds, and coronal mass ejections to improve space weather predictions.

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The Public Accounts Committee (PAC) raised concerns over the economic viability of GSAT-18 due to underutilisation of six transponders until 2027. The committee recommended that the Department of Space exercise greater financial prudence in satellite projects using public funds. A revenue loss of ₹117 crore was reported due to idle transponders. GSAT-18 is a communication satellite launched by ISRO on October 5, 2016. It was launched using the Ariane-5 VA-231 rocket from Kourou, French Guiana, with a liftoff weight of 3,404 kg. The satellite has a 15-year mission life (until 2032) and was injected into Geosynchronous Transfer Orbit (GTO).

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The European Space Agency (ESA) shut down the Gaia space observatory on March 27, 2025. It was launched in 2013 by European Space Agency (ESA). Gaia aimed to create the most precise 3D map of the Milky Way. Originally named Global Astrometric Interferometer for Astrophysics (GAIA), later simplified to Gaia. It is positioned at Lagrange Point 2 (L2), 1.5 million km from Earth, for an unobstructed view.

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Artificial Intelligence (AI) could help speed up the diagnosis of Coeliac Disease, an inherited autoimmune disorder. It is caused by an immune reaction to gluten, a protein found in wheat, barley, and rye. Eating gluten triggers intestinal damage, leading to malabsorption of nutrients. Symptoms include diarrhea, fatigue, weight loss, bloating, and anemia. In children, it can affect growth and development. 1 in 10 people with a first-degree relative having the disease are at risk. 1 in 100 people worldwide are affected. The only treatment is a strict gluten-free diet.

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An international team of astronomers has used the Transiting Exoplanet Survey Satellite (TESS) to discover a new warm Jupiter-type exoplanet over 1,000 light years away. TESS is a NASA mission launched in March 2018 to detect exoplanets orbiting bright dwarf stars by observing small dips in star brightness caused by planet transits. It followed the Kepler space telescope and used the transit method to study planet size and orbit. In its two-year prime mission, which ended in July 2020, TESS imaged 75% of the sky and discovered 66 new exoplanets. TESS continues its work under an extended mission.