In 2017, LIGO (Laser-Interferometer Gravitational Wave Observatory) and Virgo detected gravitational waves coming from the merger of two neutron stars. They named that signal GW170817. Two seconds after detecting it, NASA’s Fermi satellite detected a gamma ray burst (GRB) that was named GRB170817A. Within minutes, telescopes and observatories around the world honed in on the event.
The Hubble Space Telescope played a role in this historic detection of two neutron stars merging. Starting in December 2017, Hubble detected the visible light from this merger, and in the next year and a half it turned its powerful mirror on the same location over 10 times. The result?
The deepest image of the afterglow of this event, and one chock-full of scientific detail.
Continue reading “Hubble Has Looked at the 2017 Kilonova Explosion Almost a Dozen Times, Watching it Slowly Fade Away”
Astronomers using the Hubble space telescope have discovered water in the atmosphere of an exoplanet in its star’s habitable zone. If confirmed, it will be the first time we’ve detected water—a critical ingredient for life as we know it—on an exoplanet. The water was detected as vapour in the atmosphere, but the temperature of the planet means it could sustain liquid water on its surface, if it’s rocky.
Continue reading “Water Discovered in the Atmosphere of an Exoplanet in the Habitable zone. It Might Be Rain”
It’s amazing to think there are telescopes up in space, right now, directing their gaze at distant objects for hours, days and even weeks. Providing a point of view so stable and accurate that we can learn details about galaxies, exoplanets and more.
And then, when the time is up, the spacecraft can shift its gaze in another direction. All without the use of fuel.
Continue reading “Spacecraft Gyroscopes And Reaction Wheels. You Can Never Have Enough”
For decades, astronomers have been trying to see as far as they can into the deep Universe. By observing the cosmos as it was shortly after the Big Bang, astrophysicists and cosmologists hope to learn all they can about the early formation of the Universe and its subsequent evolution. Thanks to instruments like the Hubble Space Telescope, astronomers have been able to see parts of the Universe that were previously inaccessible.
But even the venerable Hubble is incapable of seeing all that was taking place during the early Universe. However, using the combined power of some of the newest astronomical observatories from around the world, a team of international astronomers led by Tokyo University’s Institute of Astronomy observed 39 previously-undiscovered ancient galaxies, a find that could have major implications for astronomy and cosmology.
Continue reading “Astronomers Uncover Dozens of Previously Unknown Ancient and Massive Galaxies”
The Hubble Space Telescope is like an old dog that is constantly teaching the astronomical community new tricks. In the course of its almost thirty years in operation, it has revealed vital data about the expansion of the Universe, its age, the Milky Way, supermassive black holes (SMBHs), other star systems and exoplanets, and the planets of the Solar System.
Most recently, an international team of researchers using Hubble made a discovery that was not only fascinating but entirely unexpected. In the heart of the spiral galaxy NGC 3147, they spotted a swirling thin disk of gas that was precariously close to a back hole that is about 250 million Solar masses. The find was a complete surprise since the black hole was considered too small to have such a structure around it.
Continue reading “Hubble Spots “Impossible” Debris Disk Around a Black Hole”
7500 light years away is an object that (almost) needs no introduction: Eta Carinae. If you haven’t heard of it you should be following Universe Today more. Eta Carinae is a well-known and often-studied object in astronomy, partly because it’s prone to the kind of violent outbursts that really grab your attention.
Continue reading “Hubble has a Brand New Picture of the Massive Star Eta Carinae. It Could Detonate as a Supernova Any Day Now”
Scientists working with the Hubble Space Telescope have found a very complex molecule out there in space. Called Buckyballs, after renowned thinker Buckminster Fuller, they are a molecular arrangement of 60 carbon atoms (C60) in the rough shape of a soccer ball. Though it’s not the first time these exotic molecules have been spotted in space, it is the first time that Buckyball ions have been found.
Continue reading “Hubble Finds Buckyballs in Space”
The Hubble Space Telescope has given us a beautiful image of the barred spiral galaxy NGC 7773. This is a classic galaxy of this type, and highlights the bright bar of concentrated stars that anchors the galaxy’s stately spiral arms. It was captured with the Hubble’s workhorse Wide Field Camera 3 (WFC3.)
Continue reading “Perfect Example of a Barred Spiral Galaxy, Seen Face On. This is What Our Milky Way Might Look Like”
Once it is deployed to space, the James Webb Space Telescope (JWST) will be the most sophisticated and advanced space telescope in operation. Carrying on in the tradition of Hubble, Kepler, and Spitzer, the JWST will use its advanced suite of infrared imaging capabilities to study distant exoplanets, learn more about the Solar System, and study the earliest galaxies in the Universe.
After numerous delays, NASA announced last summer that the much-anticipated JWST would be ready to launch by 2021. And in what is admittedly a very nice change of pace, NASA recently indicated that this is still a go! According to their latest update, the JWST has just completed its final vacuum test and is on track for launch in March of 2021.
Continue reading “Phew! James Webb passes its final thermal vacuum test. Still on track for 2021”
Great question! The answer has to do with Hubble’s history.
It’s easy to forget that the Hubble has been in space since 1990. That’s going on 30 years now. And during that time, it’s been serviced and had its cameras upgraded.
Continue reading “Why do Some Hubble Images Have That Chunk Taken Out of the Corner?”