Science Alert

Latest news, top updates and current developments from the world of Health, Science and technology along with tips on physical & mental health and fitness.
Updated: 1 hour 28 min ago
'Many of you will be future astronauts': Shubhanshu Shukla speaks to students from ISS
During his ISS mission, astronaut Shubhanshu Shukla connected with students from Meghalaya and Assam via Ham radio from NESAC, Shillong. He addressed their questions about life in space, training, and health in microgravity, highlighting the challenges of adapting to weightlessness and the importance of exercise and teamwork. Shukla also discussed the role of robotics in assisting astronauts with their tasks.
Shubhanshu Shukla on the ISS can be spotted over Indian skies; here’s how, when and where to see through your naked eye
Indians have a unique opportunity to see the International Space Station (ISS) as it passes over India, carrying astronaut Shubhanshu Shukla. Visible to the naked eye, the ISS will appear as a bright, fast-moving star. Several viewing opportunities are available in July, with tracking apps like 'Spot the Station' and 'ISS Detector' providing precise timings and directions.
Why we see different colours in moonlight — from blood red to honey yellow
Moonlight's colour varies. It depends on Earth's atmosphere. The Moon reflects sunlight. Atmospheric particles scatter light. This creates orange or red hues. Lunar eclipses cause 'blood moons'. Volcanic ash can produce blue moons. Summer moons appear honey-coloured. Rare green flashes and halos occur. Viewing conditions affect moonlight's appearance. The Moon's light is a dynamic phenomenon.
‘Salute to team ISRO’: Shubhanshu Shukla speaks to ISRO chairman from the ISS
India's first Gaganyatri, Shubhanshu Shukla, spoke with ISRO Chairman Dr. V. Narayanan from the ISS. Shukla thanked ISRO for his successful journey. They discussed scientific experiments and Shukla's well-being. The ISRO Chairman emphasized documenting activities for the Gaganyaan program. Senior ISRO officials also participated in the call. Shukla expressed gratitude to PM Modi and ISRO.
Axiom-4: Bengaluru 'water bears' serve their purpose in space
Indian astronaut Shubhanshu Shukla's first week on the ISS involved completing the Voyager Tardigrades experiment, studying the survival and reproduction of 'Bengaluru strain' water bears in microgravity. He also initiated the Myogenesis study on muscle degradation and contributed to research on microalgae, cyanobacteria, and cognitive assessments, paving the way for advancements in space exploration and potential applications on Earth.
Scientists confirm adult human brain continues to generate new neurons
Swedish researchers at Karolinska Institutet have discovered that the human hippocampus continues to produce new neurons throughout adulthood, challenging previous assumptions about brain plasticity. By analyzing brain tissue from individuals aged 0 to 78, they identified neural progenitor cells in the dentate gyrus, a region crucial for memory and learning.
Space burial goes wrong: Capsule with remains of 166 people and cannabis seeds crashes into Pacific ocean
A space burial mission by Celestis, in collaboration with The Exploration Company (TEC), faced a setback when its capsule, carrying the ashes of 166 individuals and cannabis seeds, crashed into the Pacific Ocean. Launched on June 23, 2025, the 'Mission Possible' capsule completed two Earth orbits before a reentry anomaly caused its destruction.
Is your brain 15 seconds behind? Study reveals you are seeing the past, not the present
A groundbreaking study has unveiled a surprising truth about our perception of time: the present moment is not as straightforward as it seems. Our brains intricately delay and blend visual signals from the previous 15 seconds, creating a polished, uninterrupted experience that shields us from the sensory overload of reality.
Stranger from afar: Nasa confirms interstellar comet 3I/Atlas in our solar system; set to make a close pass in October
NASA has spotted an intergalactic comet, named 3I/Atlas, that journeyed into our solar system. This icy snowball, the third interstellar object detected, poses no threat to Earth. Currently near Jupiter, it will pass between Mars and Earth's orbits in October, safely beyond 150 million miles from the red planet.
Largest Mars rock could sell for a staggering $4 million
A stunning 54-pound Martian meteorite, known as NWA 16788, is poised to hit the auction block in New York, with a staggering estimated value of $4 million. Unearthed in Niger, this meteorite stands as the largest Martian specimen on Earth, providing a rare glimpse into the mysteries of the Red Planet.
Shubhanshu Shukla answers students’ questions about life on the ISS: From eating to floating in space
Group Captain Shubhanshu Shukla, the first Indian astronaut to reach the International Space Station, engaged with Indian students in a live session under ISRO’s Vidyarthi Samvad Programme. Shukla shared insights into daily life in space, including sleeping arrangements, food, health protocols, and the emotional impact of viewing Earth from orbit.
Elon Musk wants International Space Station retired after Donald Trump’s Tax Bill allocates $1.25 billion, says: ‘It’s time to focus on Mars’
Elon Musk wants the International Space Station to shut down. He suggests focusing on Mars missions instead. He thinks the ISS is old and costly. NASA plans to deorbit the ISS by 2030. Some support Musk's Mars vision. Others worry about losing ISS research and partnerships. A gradual shift is a suggested solution. The debate continues.
Earth's faster spin may cause shorter days, scientists warn — should you be concerned
Earth's rotation is speeding up, leading to shorter days and potential timekeeping adjustments. Scientists predict that by 2029, a leap second might be subtracted from atomic clocks for the first time ever to align with this faster spin. This adjustment highlights the dynamic relationship between human-made time and Earth's natural rhythms, influenced by geophysical changes.
Nasa discovers mysterious interstellar object entering the solar system
Astronomers spot a mysterious object from interstellar space. The object, 3I/Atlas, is traveling at 60 km/s. It poses no threat to Earth. NASA confirms it is the third interstellar visitor. Scientists trace its path and classify it as a comet. The object will approach the sun by October 30. It may become visible through telescopes.
Here’s how flight surgeons are monitoring Ax-4 crew, with India in the loop
Axiom-4 astronauts, including Group Captain Shubhanshu Shukla, are under close medical observation during their ISS mission. Axiom Space flight surgeons prioritize their well-being through telehealth check-ins and personalized care. Indian doctors are also participating, gaining valuable experience for India's human spaceflight program, fostering international cooperation in space medicine.
Tejas-Mk-1A roll out from Nashik this month, Astra firing likely in Aug: HAL CMD
Hindustan Aeronautics Limited (HAL) is set to roll out the first LCA Tejas Mk1A from its Nashik plant by July-end, with Astra missile testing planned for early August. Despite engine supply challenges from GE and radar integration delays, HAL is pushing forward, aiming to deliver 12 aircraft this year.
Isro’s Samvad Programme interaction: Shubhanshu Shukla speaks to students; talks about life in space
Astronaut Shubhanshu Shukla, currently on the ISS, interacted with Lucknow students as part of Isro’s Vidyarthi Samvad Programme. He shared insights into astronaut life, covering topics like sleeping arrangements, food, health, and the challenges of adapting to space. Group Captain Angad Pratap of the Gaganyaan mission also attended, promoting space program awareness.