Sorry, Astronomers Haven’t Found The Brightest Quasar In The Entire Universe
“This new quasar is fascinating, but not for the reasons you might have heard. It’s not the brightest object near our cosmic dawn, but one of the faintest such objects discovered. It’s only because of the power of gravitational lensing, a chance alignment of an intervening galaxy, and the unique rules of Einstein’s relativity that we were able to find it at all.
We may have found the quasar with the largest apparent brightness in the early Universe, which is remarkable in and of itself. But our goal is to understand the Universe as it is, not as it appears to us. When we take that into account, this quasar is exactly in line with what we expect it to be. And that’s a fascinating story in and of itself, with no additional sensationalism necessary.”
Imagine looking out at the distant Universe and finding what looks like a quasar with the brightness of 600 trillion Suns. That’s more than twice as bright as the brightest known quasar, out of hundreds, at comparable distances. It implies a black hole that’s as massive as 10 billion Suns, in a galaxy forming stars at tens of thousands of times the rate of the Milky Way, less than a billion years after the Big Bang.
Incredible First Discoveries From NASA’s New Exoplanet-Hunting Spacecraft: TESS
“The ultimate goal of TESS is to find possible Earth-like worlds, and star systems which may house rocky, potentially habitable worlds. Because TESS is optimized to scour the stars nearest to us, it’s greatest finds will be among the first targets for future, more powerful observatories that can not only detect these worlds, but measure their atmospheric contents. If we get lucky, some of those worlds might house molecules like water, methane, carbon dioxide, or even oxygen in their atmospheres.
It won’t be a slam-dunk that these worlds are inhabited, but TESS takes us one step closer towards finding the nearest worlds that might be humanity’s greatest hope for finding life outside of our own Solar System. The worlds we’ve found so far are absolutely fascinating, and just a few months into its primary mission, TESS is easily meeting even the loftiest expectations for it. By time the James Webb Space Telescope launches, TESS should provide us with many worlds that just might be the best place to look to take our next great leap towards our ultimate goal: finding an inhabited world.”
NASA’s exoplanet-hunting satellite, TESS, was launched in April of 2018, began taking data in July, and released their first data to the world last month. That data contains around 300 candidate exoplanets, and the first eight of them have already been confirmed. From worlds so hot that they might have liquid rock on their surface to a solar system so strange we’ve never found anything like it, these are the first highlights.
A Billion Years In Interstellar Space: What We Know Today About ‘Oumuamua
“The incredible conclusion isn’t just that ‘Oumuamua came from outside
of our Solar System, but that this was both rare and common. For an
individual object, like ‘Oumuamua, it will likely never come this close
to another Solar System again. Only once every 100 trillion years — some
10,000 times the current age of the Universe — will it pass so close to
a star. As scientist Gregory Laughlin put it, “this was the time of
But for our Solar System, because of the sheer
number of objects like this flying through the galaxy, we probably
experience a close encounter like this around a few times per year. 2017
marked the first time we saw such an object, but we’ve likely gotten
billions of them over the course of our Solar System’s lifetime. Some of
them, if nature was kind, may have even collided with Earth.
There may be as many as ~1025
of objects like this flying through our galaxy, and every so often,
we’ll get lucky enough to encounter one of them. For the first time,
we’ve actually seen one of them for ourselves.”
In 2017, our Solar System received a visit like never before: from an object originating from interstellar space. Likely ejected more than a billion years ago from a foreign solar system, it happened to pass within even the orbit of Mercury, only becoming visible to our telescopes when it came within 60 lunar distances of the Earth.