Exploring the grounds of the religious site, also known as the Frombork Cathedral, the archaeologists employed ...

In the frozen outskirts of the solar system, a reddish dwarf planet orbits in silence. Known as Sedna, it is so distant that one trip around the Sun takes more than 11,000 years. For much of that time ...

With those numbers, Dr. Quarta solved 180 different optimal control thrust vector problems using either 1, 2, or 3 ion thrusters, for heliocentric orbits between .85 AU and 1.15 AU.

At a heliocentric distance ranging from 10,000 to 100,000 astronomical units — each unit being equal to ... At an epic timescale "comparable to the age of the solar system," which is 4.6 ...