We’ll Have to Wait About 3,000 Years for a Reply From Intelligent Civilizations

The recurrent nova RS Ophiuchi just went into outburst — its first burst in 15 years — and it’s bright enough to see with the naked eye

We Have 4 Years Left to Keep Warming to 1.5 °C. Here's How We Can Do It

NASA’s New Telescope Will Show Us the Infancy of the Universe. Twenty-five years and ten billion dollars in the making, the James Webb Space Telescope will enable scientists to see deeper into the past than ever before.