One black hole may be 4 million solar masses, about the same mass as our Milky Way’s central black hole. The other may be 150 million solar masses.
Posts by Deborah Byrd
Saturn in the evening. Mercury at nightfall from southerly latitudes. Venus and Mars before dawn. Jupiter emerges from dawn glow in mid-September.
Gorgeous photo of one of the most beautiful beaches in the Pacific Northwest.
First recorded occurrence of three Category 4 hurricanes in central and eastern Pacific basins at once. Hurricane Center in Honolulu issuing advisories on all three.
New Horizons will perform four maneuvers in October and November to veer toward 2014 MU69 – an object in the Kuiper Belt – aiming for a January 1, 2019 encounter.
The F ring, Saturn’s outermost ring, is perhaps the most active ring in our solar system, with features changing on a timescale of hours.
New Hubble Space Telescope image of a planetary nebula, created by two aging stars that have shucked off their outer layers, but still orbit each other.
Earth’s shadow is a deep blue-grey, darker than the twilight sky. The pink band above the shadow – in the east after sunset, or west before dawn – is called the Belt of Venus.
Animation of the planet Venus, now returning to the east before dawn. The animation shows Venus in the morning sky from August 2015 through March 2016.
In July, scientists spotted a rare South Pacific nautilus – considered to be one of the rarest animals on Earth – for the first time in three decades.