Skip to main content

Featured

Mars and Earth - Small difference & big consequences

Einstein's theory of relativity suggests that time is not a constant and can vary based on gravitational fields and speed. In a strong gravitational field, time moves slower compared to a weaker one. Since Mars has a weaker gravitational field than Earth, time actually flows slightly faster there.  This concept has implications for future space missions, as the timing of communication and operation of spacecraft will need to account for this difference in how time elapses on Mars compared to Earth. Missions may need to adjust their schedules, operations, and technology to ensure accuracy and synchronization with Earth. Basically, the moment you bring gravity and velocity into the picture, time stops behaving like the simple, universal tick‑tock we experience in everyday life. And you’re absolutely right: Mars’ weaker gravity means clocks there run a little faster than clocks on Earth. What’s fascinating is how small the difference is—and how big the consequences become ...

The Saturn Nebula reveals its complexity

A planetary nebula is the corpse that remains when a star dies. When planetary nebulae were observed for the first time with a telescope, they presented a roughly circular shape, resembling that of the gas giant planets. Hence their name, which remains in use even though they are very different from planets. The article published recently by Astronomy & Astrophysics is the first detailed study of a galactic planetary nebula with the MUSE integral field spectrograph on ESO's Very Large Telescope (VLT). This work has revealed unexpected complexity in the gas and dust expelled by a giant red star at the end of its life. The distribution of temperatures and densities within the nebula challenges current techniques to unravel the history of the formation processes and demonstrates the potential of the MUSE instrument to revise research concerning planetary nebulae.

from Astronomy News - Space News, Exploration News, Earth Science News, Earth Science https://ift.tt/2UWABsD

Comments

Popular Posts