资讯

In the 1950s, the U.S. began focusing on nuclear propulsion as an effective way to power space exploration with projects ...
A team of researchers has outlined how a new "direct fusion drive" propulsion system could allow us to reach Sedna this ...
Despite too many two-dimensional characters, a bloated story, and forgettable mutant dinosaurs, Rebirth still manages to ...
These scientists may be lesser known than Einstein and Newton, but they made giant contributions to science, including astronomy, physics, chemistry and medicine. Isaac Newton once wrote, "If I have ...
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 ...