The message is hammered over and over, in news conferences, hearings and executive orders: President Donald Trump and his health secretary, Robert F. Kennedy Jr., say they want the government to ...

Winter nights are longer, giving more time to see bright stars. Cold, dry air in winter makes stars appear clearer and brighter. Constellations like Orion and Gemini are best seen during winter months ...

Black holes are formed when massive stars die and collapse after a supernova. Black holes stretch and consume stars, causing spaghettification. Earth is safe from black holes as the nearest one is ...