To reproduce the orbits and masses of the terrestrial planets (analogs) of the solar system, most studies scrutinize simulations for success as a batch. However, there is insufficient discussion in ...

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 293 Issued at 2200Z on 20 Oct 2023 Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 292 Issued at ...

The solar system is 4.54 billion years old, based on rock dating. Gas giants (Jupiter and Saturn) likely formed first. Ice giants (Uranus and Neptune) probably formed next. Rocky planets formed last, ...

A long-ago reshuffling of the giant planets in our solar system may have been instrumental in giving Earth its moon. For decades, planetary scientists have hypothesized that Jupiter, Saturn, Uranus ...

An international team has made a significant breakthrough in understanding the tectonic evolution of terrestrial planets.

Astronomers have discovered the youngest known Earth-sized planet circling a nearby Sun-like star. At just 400 million years old, the newfound world, named HD 63433 d, is more than 10 times younger ...