Feature articles
What is the approximate minimum mass required for an object similar to the Sun to ignite core hydrogen fusion?
Which fundamental stellar characteristic governs the entirety of a star's evolutionary path, from formation to its final remnant?
What are the typical diameters, in kilometers, for stellar remnants classified as white dwarfs?
According to the direct relationship between temperature and color, what visual appearance results from stars emitting light peaking at longer wavelengths?
What is the classification system used by astronomers for stars based on decreasing surface temperature?
What two factors combine to determine a star's intrinsic Luminosity?
In the logarithmic magnitude scale used to describe apparent brightness, what does a smaller numerical value signify?
How do the structure differences between a high-mass star and the Sun relate to their convection zones?
How long can a red dwarf star, less massive than $0.25 M_ ext{Sun}$, potentially sustain hydrogen fusion?
Which characteristic of a star directly dictates the specific dark absorption lines visible in its spectrum?
What is the designation for the specific mission where astronauts from both ISRO and ESA will fly together?
Which three nations, besides the veteran American commander, are represented by crew members on the culturally diverse Ax-4 flight?
What specific SpaceX Crew Dragon spacecraft capsule was used for the Ax-4 mission?
What is the primary area of focus outlined in the ESA and ISRO Joint Statement of Intent regarding human space exploration?
Which investigation, focusing on muscle repair processes using stem cell cultures, is a notable joint study between ISRO and NASA on Ax-4?
What is the designation given to the suite of technology and life sciences experiments developed under ESA guidance for the Polish astronaut?
Which of the following agencies is NOT listed as a representative on the Multilateral Crew Operations Panel (MCOP)?
What is the name of the Hungarian astronaut program responsible for sending Tibor Kapu to space?
What cultural meaning was associated with the zero-g indicator *Joy* (the plush baby swan) specifically for Hungary?
What crucial benefit does participation in Ax-4 offer ISRO regarding their independent Gaganyaan program?