This year, during the heat of summer, when temperatures in New York surpassed 90°F, the 22 solar panels on the roof of my house were doing absolutely nothing. This is not something I learned until ...

Gleise 710, an orange dwarf star about 63 light years away, is on course to pass through the outer reaches of our solar system in about 1.2 million years, disturbing the distant Oort Cloud of icy ...