Astrophysics Current Affairs, GK & News
The Extreme Helium Stars are low-mass super giants and are devoid of hydrogen. So far, around 21 helium stars have been detected. The scientists at the Indian Institute of Astrophysics have determined Fluorine in Extreme Helium stars for the first time. Highlights The chemical peculiarities of the Extreme Helium stars challenge evolution of stars. However, ..
Month: Current Affairs - June, 2020
Category: Science & Technology Current Affairs
On the first day of India International Science Festival (IISF- 2019), the Guinness World Records for the largest astrophysics lesson (45 minutes) and assembly of spectroscopes was successfully achieved at the Science City in Kolkata with the participation of over 1,598 students. A small personal model of advanced spectroscopes can easily be made by anyone using ..
Topics: Academic disciplines • Astrophysics • C. V. Raman • Electronic test equipment • Fellows of the Royal Society • Indian people • Kolkata • Meghnad Saha • Optical spectrometer • Physical sciences • Saha • Signal processing
NASA has selected Texas-based Southwest Research Institute to lead its PUNCH mission which will image the Sun. This is a landmark mission that will image regions beyond the Sun’s outer corona. Prof. Dipankar Banerjee, solar physicist from Indian Institute of Astrophysics (IIA) is also a Co-Investigator of the PUNCH mission. The acronym ‘PUNCH’ stands for ..
Topics: Aditya-L1 • Astronomy • Astrophysics • Corona • Light sources • Plasma physics • Polarimeter to Unify the Corona and Heliosphere • Punch • Solar phenomena • Solar physics • Space plasmas • Space Science
Scientists from University of Michigan in the United States have found that dangerous airborne viruses can be rendered harmless on-the-fly when exposed to ‘cold plasma’ – a stream of energetic, charged fragments of air molecules. The researchers have measured the virus-killing speed and effectiveness of non thermal plasmas – the ionised, or charged, particles that ..
Normal lenses such as the ones used in a magnifying glass or a pair of spectacles bends the light rays that pass through them by refraction and focuses the light somewhere (such as in your eye). Gravitational lensing is among the first evidences of Albert Einstein’s general theory of relativity – simply put, mass bends light. The gravitational field of a massive ..
Topics: Astrophysics • Dark matter • Exotic matter • Galaxy • General relativity • Gravitational lens • Gravitational lensing • Large-scale structure of the cosmos • Mass • Natural sciences • Physical sciences • Physics