Despite the many advancements made in the field of astronomy, astronomers still struggle to get an accurate assessment of the Milky Way Galaxy. Because we are embedded in its disk, it is much more difficult to assess its size, structure, and extent – unlike galaxies located millions (or billions) of light-years away. Luckily, thanks to improved instruments and tireless efforts, progress is being made all the time.
For instance, a team of astronomers recently combined the latest data obtained by the ESA’s Gaia observatory with the infrared and optical observations of other telescopes to start mapping the bar-shaped collection of stars at the center of our Milky Way. This constitutes the first time in history that astronomers have been able to make direct measurements of this barred structure.
Continue reading “Gaia Mission is Mapping Out the Bar at the Center of the Milky Way”
On Saturday, April 20th, 2019, an explosion took place on SpaceX’s Landing Zone 1 at Cape Canaveral Air Force Station in Florida. The company was engaged in a series of static fire engine tests for their Crew Dragon‘s In-Flight Abort test vehicle. This vehicle is essential for crewed missions since it acts as a sort of ejection seat for the crew capsule in the event of an emergency.
While the initial tests of the twelve Draco thrusters on the vehicle were completed successfully, the initiation of the final test of eight SuperDraco thrusters resulted in the destruction of the vehicle. After a thorough investigation, SpaceX has concluded that the explosion was caused by a nitrogen tetroxide leak that occurred just prior to the final test.
Continue reading “Crew Dragon Exploded Back in April Because of a Nitrogen Tetroxide Leak”
During the 1930s, venerable theoretical physicist Albert Einstein returned to the field of quantum mechanics, which his theories of relativity helped to create. Hoping to develop a more complete theory of how particles behave, Einstein was instead horrified by the prospect of quantum entanglement – something he described as “spooky action at a distance”.
Despite Einstein’s misgivings, quantum entanglement has gone on to become an accepted part of quantum mechanics. And now, for the first time ever, a team of physicists from the University of Glasgow took an image of a form of quantum entanglement (aka. Bell entanglement) at work. In so doing, they managed to capture the first piece of visual evidence of a phenomenon that baffled even Einstein himself.
Continue reading “First Ever Image of Quantum Entanglement”
NASA has pioneered the development of all kinds of robots and robotic systems. Beyond its0 orbiters and satellites, which have been exploring the planets and bodies of the Solar System for decades, there’s also the growing army of landers and rovers that have been exploring planetary surfaces. Aboard the ISS, they even have floating robots (like CIMON) and humanoid robot helpers – a la Robonaut and Robonaut 2.
Looking to the future, NASA hopes to build robots that can do even more. While the current generation of rovers can drive across the plains and craters of Mars, what if they could explore cliffs, polar ice caps and other hard-to-reach places? That is the purpose behind the Limbed Excursion Mechanical Utility Robot (LEMUR) that is currently being developed by engineers at NASA’s Jet Propulsion Laboratory.
Continue reading “NASA is Building Robots That Can Climb Rock and Ice Cliffs”
Happen to be in Europe, Africa, Asia or Australia on Tuesday night, July 16th with clear skies? If the July weather cooperates, you’ll have a good view of a fine partial lunar eclipse, the final lunar eclipse for 2019.
Continue reading “Our Guide to Tuesday Night’s Partial Lunar Eclipse”
Welcome back to Messier Monday! Today, we continue in our tribute to our dear friend, Tammy Plotner, by looking at the spiral galaxy known as Messier 89!
During the 18th century, famed French astronomer Charles Messier noticed the presence of several “nebulous objects” while surveying the night sky. Originally mistaking these objects for comets, he began to catalog them so that others would not make the same mistake. Today, the resulting list (known as the Messier Catalog) includes over 100 objects and is one of the most influential catalogs of Deep Space Objects.
One of these objects is the elliptical galaxy known as Messier 89, which is located about 50 million light years from Earth in the constellation Virgo. This makes it part of the Virgo Cluster, a collection of 2,000 galaxies that lie in the direction of the Virgo and Coma Berenices constellations. This galaxy is not as bright as some other members, which makes it somewhat difficult to spot in small telescopes.
Continue reading “Messier 89 – the NGC 4552 Spiral Galaxy”
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”
The question of how life first emerged here on Earth is a mystery that continues to elude scientists. Despite everything that scientists have learned from the fossil record and geological history, it is still not known how organic life emerged from inorganic elements (a process known as abiogenesis) billions of years ago.
One of the more daunting aspects of the mystery has to do with peptides and enzymes, which fall into something of a “chicken and egg” situation. Addressing this, a team of researchers from the University College London (UCL) recently conducted a study that effectively demonstrated that peptides could have formed in conditions analogus to primordial Earth.
Continue reading “Researchers May Have Found the Missing Piece of Evidence that Explains the Origins of Life”
Since 2015, Virgin Orbit has been developing a launch system that will send satellites into space using a rocket launched from a modified 747. This is part of Sir Richard Branson’s plan to crack the burgeoning market of cost-effective satellite deployment. This market is especially lucrative considering how many satellites are expected to be launched into orbit in the coming years.
This week, the Virgin Orbit team achieved a major milestone by flying the LauncherOne rocket into the air and releasing it over the Mojave desert for the first time. This drop-test not only validated the design of the modified 747 (named Cosmic Girl) that serves as its flying launchpad, it also demonstrated the effectiveness of the launch system – which can rely on regular airstrips instead of launch pads to send satellites into space.
Continue reading “Virgin Orbit Tests its Satellite-Delivery Rocket for the First Time”
On March 26th, 2019, during the fifth meeting of the reestablished National Space Council, Vice President Mike Pence challenged NASA to land astronauts on the Moon within the next five years. This represented an order to expedite Space Policy Directive-1 signed by President Trump on December 11th, 2017, which directed NASA to take all the necessary steps to send astronauts back to the Moon.
This announcement suggested that some shake-up might be taking place within the agency to make things happen. However, it appears that this now involves the demotion of two longtime NASA heads who have dedicated much of their lives to the advancement of human space exploration. Whether or not this decision came from the White House is unclear, but it is in keeping with the direction recently issued by VP Pence.
Continue reading “Two NASA Heads Demoted, Possibly as Part of a Shake-Up to Get Back to the Moon.”