Astronomers are witnessing a spectacle never before seen in the cosmos: the awakening of a supermassive black hole at the center of a distant galaxy. In late 2019, a team of astronomers spotted an unusual galaxy called SDSS1335+0728, 300 million light-years away in the constellation Virgo. A sudden bump in the galaxy’s brightness was automatically … Read more
S-BGLS periodograms of YV2 for the star HD48948 focusing on three frequency intervals (7.3, 38 and 151 d). The absolute value of log P has no meaning; instead, the relative values of logP matter. The signal observed at about 42 d in the middle panel represents the transient activity feature. Credit: Monthly Notices of the … Read more
Larger / Juno’s enhanced image of Jupiter’s Great Red Spot in 2018. It’s likely not the same one observed by Cassini in the 1600s. The planet Jupiter is particularly known for the so-called Great Red Spot, a swirling vortex in the gas giant’s atmosphere that has existed since at least 1831. But how it formed … Read more