Astronomers have long suspected that a distant quasar harbors not one but two supermassive black holes. They've now detected OJ 287's second black hole.
Last March, S&T editor Diana Hannikainen accompanied a group of stargazers to the islands of Hawai'i on an astronomical adventure.
Protect the night sky — join the International Dark-Sky Association for activities during International Dark-Sky Week.
Concerned about light pollution? Join a virtual conference this weekend that looks at ongoing global efforts to mitigate it.
Light pollution is insidious in today’s world. This International Dark Sky Week, become inspired to see what you can do to raise awareness.
Are you a solar eclipse enthusiast with an organizational bent? An upcoming virtual workshop geared toward planning for the 2023 and 2024 events could be just the thing for you.
The weeklong celebration of the night sky we all share has always been an opportunity for people to connect with each other. This year, connecting with each other takes on a significance all its own.
Each year, the American Astronomical Society confers the Chambliss Amateur Achievement Award for significant astronomical research carried out by an amateur astronomer. This year the award goes to Dennis Conti of the AAVSO.