Space and astronomy news
The Hubble Space Telescope has been in ‘safe mode’ since October 23, with all of the science instruments offline and unavailable for observations. However, engineers have now been able to bring one instrument, the Advanced Camera for Surveys (ACS), back online, and have restarted its science observations. NASA said engineers are still investigating the issue as the other four instruments remain offline.
Continue reading “Hubble is Back Online — Partially”
Hubble is getting a bit long in the tooth. Initially launched in 1990, it has been one of the most spectacularly successful orbital satellites in history. But it has also had its fair share of errors, starting almost immediately upon its launch. Now the instruments on the telescope have been operating in a “safe mode” for more than a week, and it appears that they will remain so for at least another one.
Continue reading “Hubble Science Instruments are Malfunctioning, Putting the Telescope in Safe Mode”
By 2027, the Nancy Grace Roman Space Telescope – or Roman Space Telescope (RST), for short – will take to space and build on the legacy of the venerable Hubble Space Telescope (HST). Combing a large primary mirror, a camera as sensitive as its predecessors, and next-generation surveying capabilities, Roman will have the power of “One-Hundred Hubbles.” It’s little wonder then why the telescope is named after Dr. Roman (1925 – 2018), NASA’s first Chief Astronomer and the “Mother of Hubble.”
As part of its journey towards realization, this next-generation space telescope recently passed a crucial milestone. This would be the all-important Mission Critical Design Review (CDR), signaling that all design and developmental engineering work is complete. With this milestone reached, the next-generation space telescope is now ready to move from the conceptual stage into the fabrication and assembly phase.
Continue reading “Nancy Grace Roman Just Passed a Critical Design Review”
The search for planets beyond our Solar System has grown immensely during the past few decades. To date, 4,521 extrasolar planets have been confirmed in 3,353 systems, with an additional 7,761 candidates awaiting confirmation. With so many distant worlds available for study (and improved instruments and methods), the process of exoplanet studies has been slowly transitioning away from discovery towards characterization.
For example, a team of international scientists recently showed how combining data from multiple observatories allowed them to reveal the structure and composition of an exoplanet’s upper atmosphere. The exoplanet in question is WASP-127b, a “hot Saturn” that orbits a Sun-like star located about 525 light-years away. These findings preview how astronomers will characterize exoplanet atmospheres and determine if they are conducive to life as we know it.
Continue reading “Astronomers Detect Clouds on an Exoplanet, and Even Measure Their Altitude”
In April 2021 Hubble released its 31st-anniversary image. It’s a portrait of AG Carinae, one of the most luminous stars in the entire Milky Way. AG Carinae is in a reckless struggle with itself, periodically ejecting matter until it reaches stability sometime in the future.
Thanks to the Hubble, we get to watch the brilliant struggle.
Continue reading “Hubble Reveals the Final Stages of a Dying Star”
Launching satellites is an expensive business – at least for now. But satellites are necessary in astronomy for one major reason – it gets telescopes above the atmosphere. The Earth’s atmosphere and its associated weather patterns are a massive hindrance to collecting good images. If a stray cloud passes in front of the observational target once over the course of a few days, it could ruin the entire image. Which is why some of the most striking astronomical pictures come from space-based observatories like Hubble. But now, a team of researchers from Durham, Toronto, and Princeton Universities has come up with a new way to get above that atmosphere that doesn’t involve a launch into orbit. They want to use a balloon.
Continue reading “A new Balloon-Based Observatory Could Produce Images as Fine as Hubble”
Update: Hubble took its first picture since it went into safe mode on June 13th! More info here.
On Sunday, June 13th, the Hubble Space Telescope gave the astronomical community a fright when its payload computer suddenly stopped working. This prompted the main computer to put the telescope and its scientific instruments into safe mode. What followed was many tense weeks as the operations team for the HST tried to figure out what the source of the problem was and come up with a strategy for turning Hubble back on.
On Friday, July 17th, after more than a month of checking, re-checking, and attempted restarts, the operations team for Hubble identified the root of the problem and restored power to the telescope’s hardware and all of its instruments. Science operations can now resume, and the pioneering space telescope that gave us over thirty years of dedicated astronomy, cosmology, and astrophysics, still has some life in her!
Continue reading “Good News! NASA Announces that they have Fixed Hubble!”
Things are not looking very good for the Hubble Space Telescope right now. On Sunday, June 13th, the telescope’s payload computer suddenly stopped working, prompting the main computer to put the telescope into safe mode. While the telescope itself and its science instruments remain in working order, science operations have been suspended until the operations team can figure out how to get the payload computer back online.
While attempting to restart the computer, the operations team has also tried to trace the issue to specific components in the payload computer and switch to their backup modules. As of June 30th, the team began looking into the Command Unit/Science Data Formatter (CU/SDF) and the Power Control Unit (PCU). Meanwhile, NASA is busy preparing and testing procedures to switch to backup hardware if either of these components are the culprit.
Continue reading “NASA Continues to Try and Rescue Failing Hubble”
For over thirty years, the Hubble Space Telescope has been in continuous operation in Low Earth Orbit (LEO) and revealing never-before-seen aspects of the Universe. In addition to capturing breathtaking images of our Solar System and discovering extrasolar planets, Hubble also probed the deepest reaches of time and space, causing astrophysicists to revise many of their previously-held theories about the cosmos.
Unfortunately, Hubble may finally be reaching the end of its lifespan. In recent weeks, NASA identified a problem with the telescope’s payload computer which suddenly stopped working. This caused Hubble and all of its scientific instruments to go into safe mode and shut down. After many days of tests and checks, technicians at the NASA Goddard Space Flight Center have yet to identify the root of the problem and get Hubble back online.
Continue reading “There’s a Problem With Hubble, and NASA Hasn’t Been Able to fix it yet”
In the vastness of space, astronomers are likely to find instances of almost every astronomical phenomena if they look hard enough. Many planetary phenomena are starting to come into sharper focus as the astronomy community continues to focus on finding exoplanets. Now a team led by Yifan Zhou at UT Austin has directly imaged a gas giant still in formation.
Continue reading “Astronomers are Watching a gas Giant Grow, Right in Front of Their Eyes”