Five Amazing Space & Astronomy Facts

The Voyager 1 and Voyager 2 space probes launched in 1977 are still calling home. Carrying only cassette tapes and 256KB of memory the two probes have entered the interstellar space – the region beyond our solar system – their weak signal send temperature and other information back to earth. Gravitational waves are ripples in the structure of space that move at the speed of light. They cause the distance between objects to increase and decrease. Coalescing binary neutron stars may be one (barely) measurable source of gravitational waves. Neutron stars, what remains of some stars after they collapse, can… Read more