The answer is a tantalizing maybe. Astronomers are investigating whether an increase in the number of flares from Sgr A* is due to the recent close passage of a dusty object known as G2.
Astronomers think a bright X-ray source in the galaxy NGC 1313 is a mid-size black hole.
Observations of two cool white dwarfs show irregular outbursts in the stars’ otherwise steady rhythm of pulsations.
Be sure to look for Sunday’s total lunar eclipse (more details below). And asteroid Vesta reaches opposition this week.
On the night of September 27–28, the full Moon will slide completely through Earth’s shadow for the last time until January 2018. Read on for details on eclipse phases and what to look for.
If your Sunday night is cloudy, you can still catch the eclipse – watch our exclusive webcast of the total lunar eclipse and listen to experts chat about everything from lunar science to crater timings.
Want to see a star rock in real time? Observe the Sun in the crimson light of hydrogen alpha and watch it come alive.
As you witness Sunday’s total lunar eclipse, download this month’s podcast for a guided tour to the eclipse and the rest of September’s sky.
A pair of poster-size lunar maps, produced by the U.S. Geological Survey, let you roam around the Moon’s surface and explore the lunar landscape.