Just Like Earth, Titan Has a “Sea Level” for its Lakes and Seas Thanks to the Cassini mission, we have learned some truly amazing things about Saturn and its largest moon, Titan. This includes information on its dense atmosphere, its geological features, its methane lakes, methane cycle, and organic chemistry. And even though Cassini recently ended its mission by crashing into Saturn’s atmosphere, scientists are still pouring over all of the data it obtained during its 13 years in the Saturn system. And now, using Cassini data, two teams led by researchers from Cornell University have released two new studies that reveal even more interestingRead More →

The most massive galaxies in our neighbourhood formed their stars billions of years ago, early in the history of the universe. At the present day, they produce very few new stars. Astronomers have long believed that is because they contain very little gas – a key ingredient necessary to produce stars. But our new study, published in Nature Astronomy, is now challenging this long held view. Powered by WPeMaticoRead More →

Astronomers Set the Limit for Just How Massive Neutron Stars Can Be In February of 2016, scientists working at the Laser Interferometer Gravitational-Wave Observatory (LIGO) made history when they announced the first-ever detection of gravitational waves. Since that time, the study of gravitational waves has advanced considerably and opened new possibilities into the study of the Universe and the laws which govern it. For example, a team from the University of Frankurt am Main recently showed how gravitational waves could be used to determine how massive neutron stars can get before collapsing into black holes. This has remained a mystery since neutron stars were firstRead More →

Like the waistband of a couch potato in midlife, the orbits of planets in our solar system are expanding. It happens because the Sun’s gravitational grip gradually weakens as our star ages and loses mass. Now, a team of NASA and MIT scientists has indirectly measured this mass loss and other solar parameters by looking at changes in Mercury’s orbit. Powered by WPeMaticoRead More →

The afterglow from the distant neutron-star merger detected last August has continued to brighten – much to the surprise of astrophysicists studying the aftermath of the massive collision that took place about 138 million light years away and sent gravitational waves rippling through the universe. Powered by WPeMaticoRead More →

Physicists Have Created an Artificial Gamma Ray Burst in the Lab On July 2nd, 1967, the U.S. Vela 3 and 4 satellites noticed something rather perplexing. Originally designed to monitor for nuclear weapons tests in space by looking for gamma radiation, these satellites picked up a series of gamma-ray bursts (GRBs) coming from deep space. And while decades have passed since the “Vela Incident“, astronomers are still not 100% certain what causes them. One of the problems has been that until now, scientists have been unable to study gamma ray bursts in any real capacity. But thanks to a new study by an international teamRead More →

Resembling a swarm of flickering fireflies, this beautiful galaxy cluster glows intensely in the dark cosmos, accompanied by the myriad bright lights of foreground stars and swirling spiral galaxies. A1758N is a sub-cluster of Abell 1758, a massive cluster containing hundreds of galaxies. Although it may appear serene in this NASA/ESA Hubble Space Telescope image, the sub-cluster actually comprises two even smaller structures currently in the turbulent process of merging. Powered by WPeMaticoRead More →

Weekly Space Hangout – Jan 17, 2018: Dr. Bram Venemans and Distant Quasars Hosts: Fraser Cain (universetoday.com / @fcain) Dr. Paul M. Sutter (pmsutter.com / @PaulMattSutter) Dr. Kimberly Cartier (KimberlyCartier.org / @AstroKimCartier ) Dr. Morgan Rehnberg (MorganRehnberg.com / @MorganRehnberg & ChartYourWorld.org) Special Guest: Dr. Venemans is a research staff scientist working at the Max Planck Institute for Astronomy (MPIA) in Heidelberg, Germany. His research topics include the discovery of black holes in the early Universe, the characterisation of the galaxies hosting these distant black holes, the Epoch of Reionisation and the galaxy environment of active galaxies. Bram is a member of the team that recentlyRead More →

James Webb Wraps up 3 Months in the Freezer. It’s Ready for Space When the James Webb Space Telescope finally takes to space, it will study some of the most distant objects in the Universe, effectively looking back in time to see the earliest light of the cosmos. It will also study extra-solar planets around nearby stars and even bodies within the Solar System. In this respect, the JWST is the natural successor to Hubble and other pioneering space telescopes. It is therefore understandable why the world is so eager for the JWST to be launched into space (which is now scheduled to take placeRead More →

Carnival of Space #544 This week’s Carnival of Space is hosted by me at the CosmoQuest blog. Click here to read Carnival of Space #544 And if you’re interested in looking back, here’s an archive to all the past Carnivals of Space. If you’ve got a space-related blog, you should really join the carnival. Just email an entry to susie@wshcrew.space, and the next host will link to it. It will help get awareness out there about your writing, help you meet others in the space community – and community is what blogging is all about. And if you really want to help out, sign up to beRead More →

Asteroid Mining is Getting Closer to Reality. Planetary Resources Arkyd-6 Satellite Just Launched In 2009, Arkyd Aeronautics was formed with the intention of becoming the first commercial deep-space exploration program. In 2012, the company was renamed Planetary Resources, and began exploring the ambitious idea of asteroid prospecting and mining. By harnessing Near-Earth Objects (NEOs) for their water and minerals, the company hopes to substantially reduce the costs of space exploration. A key step in this vision is the deployment of the Arkyd 6, a CubeSat that will begin testing key technologies that will go into asteroid prospecting. Last week (on Friday, January 12th), the Arkyd-6Read More →

Odd Behaviour of Star Reveals Lonely Black Hole Hiding in Giant Star Cluster Astronomers using ESO’s MUSE instrument on the Very Large Telescope in Chile have discovered a star in the cluster NGC 3201 that is behaving very strangely. It appears to be orbiting an invisible black hole with about four times the mass of the Sun — the first such inactive stellar-mass black hole found in a globular cluster and the first found by directly detecting its gravitational pull. This important discovery impacts on our understanding of the formation of these star clusters, black holes, and the origins of gravitational wave events. ESO NewsRead More →

Astronomers using ESO’s MUSE instrument on the Very Large Telescope in Chile have discovered a star in the cluster NGC 3201 that is behaving very strangely. It appears to be orbiting an invisible black hole with about four times the mass of the Sun—the first such inactive stellar-mass black hole found in a globular cluster and the first found by directly detecting its gravitational pull. This important discovery impacts on our understanding of the formation of these star clusters, black holes, and the origins of gravitational wave events. Powered by WPeMaticoRead More →

ESOcast 146 Light: Odd Behaviour of Star Reveals Black Hole in Giant Star Cluster (4K UHD) Astronomers using ESO’s MUSE instrument on the Very Large Telescope in Chile have discovered a star in the cluster NGC 3201 that is behaving very strangely. It appears to be orbiting an invisible black hole with about four times the mass of the Sun — the first such inactive stellar-mass black hole found in a globular cluster. Powered by WPeMaticoRead More →