Space and astronomy news
A new technique may prove to be a powerful tool in the battle to mitigate space debris.
As the Space Age continues into its seventh decade, space debris is now growing at an exponential rate. Most of this debris is in Low Earth Orbit (LEO), and ranges from bus-sized discarded rocket boosters and defunct satellites, to tiny millimeter-sized fragments.
Continue reading “First Laser Space Debris Detection Made… in Daylight”
For some time now, astronomers have known that the majority of systems in our galaxy consist of binary pairs rather than individual stars. What’s more, in recent decades, research has revealed that stars like our Sun are actually born in clusters within solar nebulas. This has led to efforts in recent years to locate G-type (yellow dwarf) stars in our galaxy that could be the Sun’s long-lost “solar siblings.”
And now, a new study by Harvard astronomers Amir Siraj and Prof. Abraham Loeb has shown that the Sun may once have once had a very similar binary companion that got kicked out of our Solar System. If confirmed, the implications of this could be groundbreaking, especially where theories on how the Oort Cloud formed and whether or not our system captured a massive object (Planet Nine) in the past.
Continue reading “The Sun Might Have Once Had a Binary Companion Star”
The most widely accepted cosmological view states that the first galaxies formed about 380–400 million years after the Big Bang. These were made up of young, hot stars that lived fast and died young, causing the galaxies themselves to be turbulent. At least, that was the theory until a European team of astronomers observed a galaxy 12 billion light-years away that closely resembled the Milky Way.
Using the Atacama Large Millimeter-submillimeter Array (ALMA), the team observed the galaxy, SPT0418-47, as it appeared when the Universe was just 1.4 billion years old. Much to their surprise, the team noted that the structure and features of this galaxy were highly evolved and stable, something that contradicts previously-held notions about the nature of galaxies in the early Universe.
Continue reading “This Distorted Circle is Actually a Galaxy That Looked Very Similar to the Milky Way, Shortly After the Big Bang”
Betelgeuse, the tenth brightest star in the night sky and the second brightest in the constellation Orion, has been behaving a little oddly lately. Beginning in December of 2019, researchers from Villanova University noticed the red supergiant was dimming noticeably. This trend continued into the new year, with Betelgeuse dimming throughout January and February of 2020. eventually losing two-thirds of its brilliance.
From this point onward, Betelgeuse began to brighten again and returned to its typical visual brightness by April. And now, the massive star dimming once again, and ahead of schedule. In response, an international team of researchers recently conducted a study where they theorized that this pattern might be the result of Betelgeuse “sneezing” out dense clouds of hot gas which then cooled.
Continue reading “Some Astronomers Think Betelgeuse Dimmed Because it “Sneezed”. And it Might be Getting Ready to do it Again”
The Arecibo Observatory is an iconic institution. Located in Puerto Rico, this National Science Foundation (NSF) observatory was the largest radio telescope in the world between 1963 and 2016. While that honor now goes to the Five hundred meter Aperture Spherical Telescope (FAST) in China, Arecibo will forever be recognized for its contributions to everything from radio astronomy to the Search for Extraterrestrial Intelligence (SETI).
Unfortunately, the Arecibo Observatory suffered serious damage when on Monday, Aug. 10th, an auxiliary cable that supports the platform suspended above the telescope reflector dish broke. The cable struck the Gregorian Dome (which sits on the underside of the platform) before landing on the reflector dish, which created a gash over 30 meters (100 feet) in length and forced the observatory to temporarily shut down operations.
Continue reading “A Broken Cable Smashed Part of the Arecibo Observatory”
At the Science Gallery of Trinity College Dublin, a beautiful work of art is capturing the imagination of people all over the world. It’s called “Dark Distortions,” a work of interactive art by Dutch artist Thijs Biersteker of Woven Studio. Inspired by the ESA’s forthcoming Euclid mission, a visible to near-infrared space telescope that will launch sometime in 2022 to study the mysterious nature of Dark Matter.
Continue reading “Art Installation that Demonstrates How Dark Matter Bends Light with Gravity”
Virgin Galactic, the space tourism arm of Richard Branson’s multinational commercial empire (aka. the Virgin Group) has some bold plans for the future. In the past year, the company carried out two glide tests with their LauncherOne vehicle, completed two successful flight tests with their SpaceShipTwo vehicle, and unveiled the Gateway to Space – their space tourism hub at Spaceport America.
And last week (Monday, August 3rd), the company announced that it had entered into a partnership with engine-maker Rolls-Royce to build a supersonic commercial aircraft that would travel three times the speed of sound (Mach 3). If realized, the proposed aerospace vehicle will carry 19 passengers to altitudes of more than 18,000 meters (60,000 ft) while travelling at speeds 50% faster than the Concorde.
Continue reading “Virgin Galactic Wants to Build a Supersonic Jetliner That’ll go Even Faster Than the Concorde”
SpaceX has been making some exciting moves this summer. On May 30th, their Crew Dragon spacecraft launched on its historic Demo-2 mission, carrying astronauts Robert Behnken and Douglas Hurley to the ISS. They safely returned again on August 2nd, shortly after the SN5 prototype conducted the long-awaited 150 m (500 ft) hop test at the company’s launch facility in Boca Chica, Texas.
And now, in a move that mirrors what Virgin Galactic is doing at Spaceport America in New Mexico, SpaceX has committed to turning Brownsville – the town nearest to the Boca Chica facility – into its own spaceport. To this end, SpaceX recently posted a job application on its website where they announced they are seeking a Resort Development Manager. Potential applicants should follow the link if they think they’re up to the task!
Continue reading “SpaceX is Hiring People to Help Build a Resort at the Boca Chica Launch Facility”
What would we look for in a distant exoplanet in the hunt for Earth-like worlds, and perhaps life? A recent observation carried out by the Hubble Space Telescope found tell-tale signatures from our home planet by looking at a familiar source under extraordinary circumstances: Earth’s Moon, during a total lunar eclipse.
Continue reading “Hubble Examines Earth’s Reflection as an ‘Exoplanet’ During a Lunar Eclipse”
In 1987, astronomers witnessed a spectacular event when they spotted a titanic supernova 168,000 light-years away in the Hydra constellation. Designated 1987A (since it was the first supernova detected that year), the explosion was one of the brightest supernova seen from Earth in more than 400 years. The last time was Kepler’s Supernova, which was visible to Earth-bound observers back in 1604 (hence the designation SN 1604).
Since then, astronomers have tried in vain to find the company object they believed to be at the heart of the nebula that resulted from the explosion. Thanks to recent observations and a follow-up study by two international teams of astronomers, new evidence has been provided that support the theory that there is a neutron star at the heart of SN 1604 – which would make it the youngest neutron star known to date.
Continue reading “Astronomers Think They’ve Found the Neutron Star Remnant From Supernova 1987a”