Gaining spatial resolution by arranging radio telescopes in interferometric arrays

Interferometry is the way to go in modern radio astronomy. Why? By arranging multiple small radio telescopes in interferometric arrays, spatial resolution of the entire array of smaller dishes is higher than that of a single radio dish of larger diameter.   More importantly, design of interferometric arrays is critical to improving reception of distant … More Gaining spatial resolution by arranging radio telescopes in interferometric arrays

Observatories with large reflector telescopes are usually located at high elevations with low relative humidity and away from light pollution

Many observatories are available in the world, but many of them are situated in areas of low elevations and with significant light pollution. These observatories typically could be used for observing planets in our Solar System and bright stars in the Milky Way.   To perform cutting edge research into cosmology, planetary science and astrophysics, … More Observatories with large reflector telescopes are usually located at high elevations with low relative humidity and away from light pollution

Could the main asteroid belt between Mars and Jupiter be the remnants of a planet?

Between Mars and Jupiter lies a disk of asteroids, which is purported to be remnants of a planet shred apart by the gravitational pull of Jupiter. Personally, I do not think that is the case.   Specifically, it is hard to conceive that a rocky planet between Mars and Jupiter could be shred apart by … More Could the main asteroid belt between Mars and Jupiter be the remnants of a planet?

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