Global network of standardized telescopes for time domain astronomy

Feature article in Science, Vol. 356, Issue 6337, pp. 476-479, “A global robotic telescope network helps astronomers keep up with the fast-changing sky”   Summary of article: Using standardized telescopes of diameter between 2 meter and 40 centimeters, a global network of automated telescopes lend clarity to distant stars, galaxies and even exoplanets through the … More Global network of standardized telescopes for time domain astronomy

Determining the expansion of the Universe through the Hubble constant

Feature article in Science, Vol. 355, Issue 6329, pp. 1010-1014, “Hubble Trouble” Summary of article: Observations of distant stars and galaxies highlighted to astronomers that the universe is expanding through possibly the repulsive effect of dark energy; however, the rate of expansion of the universe as measured by the Hubble constant is still under heavy … More Determining the expansion of the Universe through the Hubble constant

Our moon is bigger in size to Pluto, but it is not a planet. What defines a planet?

Our moon’s diameter is 3476 km (Link), which is larger than that of Pluto, which stands at 2370 km (Link). Hence, can our moon be a planet? Answer is yes, if our moon orbits in a circular or slightly elliptical orbit around a star. It is our moon because it orbits around our planet, Earth. … More Our moon is bigger in size to Pluto, but it is not a planet. What defines a planet?

Antarctica McMurdo research station

Antarctica is important in many ways other than its sheer scale of beauty for explorers, it is also rich in many areas of scientific research running from astronomy, cosmology, global warming, glaciology, climate change, sea level rise, social animal activities, etc. The United States run the largest scientific research station in Antarctica, McMurdo research station, … More Antarctica McMurdo research station

An orbit around a body should be circular without propellant thrust

Cassini spacecraft is making its final 22 orbits around Saturn and is diving between the planet and its rings. Highly elliptical in trajectory, Cassini is said to be orbiting Saturn, but is it?   The answer is yes, but it must be noted that Cassini is travelling around Saturn with the help of timely thruster … More An orbit around a body should be circular without propellant thrust

Misconception of high concentration of space debris in near Earth orbit

Satellites are the mainstay by which we communicate digitally to friends in different parts of the world. However, with more frequent rocket launches for propelling satellites into orbit as well as the decommissioning of old satellites, there is attendant increase in space debris orbiting the low earth orbit region where many weather satellites orbit, as … More Misconception of high concentration of space debris in near Earth orbit

Scientific value of redirecting an asteroid to lunar orbit

Ideas for capturing an asteroid and towing it with a spacecraft for parking it within lunar orbit was floated several years ago and received initial seed funding from the National Aeronautics and Space Administration (NASA) of the United States. Technical challenging and hugely expensive, the mission is conceived as a stepping stone for enabling humans … More Scientific value of redirecting an asteroid to lunar orbit

Not possible to do exploratory research on exoplanets with amateur Earth based telescopes

Detecting exoplanets in faraway solar systems is one of the hot topics in planetary science and exoplanets research, and is usually achieved with expensive space based and Earth-based telescopes. Specifically, a variety of methods such as transit and radial velocity detection have been successfully used in detecting small perturbations in the parent star luminosity and … More Not possible to do exploratory research on exoplanets with amateur Earth based telescopes