There have been multiple accounts created with the sole purpose of posting advertisement posts or replies containing unsolicited advertising.
Accounts which solely post advertisements, or persistently post them may be terminated.
anindefinitearticle , 2 hours ago Barycentric Dynamical Time is one example of an astronomical time standard used in orbital dynamics models requiring consistency across billions of years and relativistic reference frames.
Barycentric Dynamical Time is one example of an astronomical time standard used in orbital dynamics models requiring consistency across billions of years and relativistic reference frames.