Asteroid Bennu is blanketed by rocks and huge boulders. And now that the OSIRIS-REx spacecraft is taking a close look at those rocks, researchers are able to see something surprising for an airless body: the rocks have tiny cracks and fissures.
Continue reading “Rocks on Bennu are Cracking Because of the Constant Day/Night Cycling”
The date is finally set for OSIRIS-REx’s sampling maneuver. The spacecraft has been at asteroid Bennu since the end of December 2018. During that time, it’s found a few surprises, and mapped the surface in great detail.
Now, we can circle October 20th on our calendars, as the date OSIRIS-Rex will collect its sample.
Continue reading “OSIRIS-REx Will Collect a Sample from Bennu on October 20th”
NASA’s OSIRIS-REx spacecraft is getting ready for its big moment. OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer) is at asteroid Bennu, preparing to collect a sample of ancient rock. And collecting that sample means taking step after meticulous step.
Continue reading “OSIRIS-REx Descended Down to Just 75 Meters Above the Surface of Bennu in a Recent Test”
Meet OSIRIS-REx’s “Guide Boulders.”
When the NASA spacecraft first arrived at asteroid Bennu over a year ago, the surface of the asteroid was much different than expected. Instead of a surface with large, smooth areas, nearly the entire surface is covered in boulders. That meant that NASA had to do a re-think of the sampling procedure.
Continue reading “These are the Boulders OSIRIS-REx is Going to Use to Navigate Down to the Surface of Bennu”
Late last summer, NASA and the International Astronomical Union’s Working Group for Planetary System Nomenclature (a.k.a WGPSN) approved the naming convention for features on Bennu, the asteroid currently being orbited and studied by the OSIRIS-Rex spacecraft. The naming theme chosen was “birds and bird-like creatures in mythology.”
The first twelve features thusly named have now been announced. But more importantly, some of these features will be instrumental in helping to guide OSIRIS-REx to the surface of the asteroid later this year.
Continue reading “Asteroid Bennu is Getting Some Official Names for its Surface Features”
NASA’s OSIRIS-REx is getting closer, physically and temporally, to its primary goal. The spacecraft arrived at Bennu at the end of 2018, and for just over a year it’s been studying the asteroid, searching for a suitable sampling site. To do that, it’s getting closer and closer.
Continue reading “OSIRIS-REx did its Closest Flyover Yet, just 250 Meters Above its Sample Site”
While the OSIRIS-REx spacecraft was orbiting asteroid Bennu,
one of the instruments on board happened to catch a glimpse of a black hole ‘out
of the corner of its eye,’ so to speak.
While intently focusing on the asteroid, the Regolith X-Ray Imaging Spectrometer (REXIS) happened to catch the X-rays from a newly flaring stellar mass black hole. While the flare occurred 30 thousand light years away, the flash in distant space was visible just off the limb of asteroid Bennu, in the edge of the instrument’s field of view.
Continue reading “Even Though it Was Observing an Asteroid, OSIRIS-REx Accidentally Spotted a Black Hole”
NASA’s OSIRIS-REx spacecraft reached its target, asteroid Bennu (101955 Bennu), on December 3rd, 2018. Since then, the spacecraft has been examining the asteroid’s surface, looking for a suitable landing spot to collect a sample. The problem is, Bennu has a much rockier and challenging surface than initially thought.
Continue reading “OSIRIS-REx Flew 620 Meters Above its Landing Site. Confirms that it’s a Boulder-Strewn Nightmare, Just Like the Rest of Bennu”
NASA’s OSIRIS-REx arrived at asteroid Bennu in December 2018. During the past year, it’s been imaging the surface of the asteroid extensively, looking for a spot to take a sample from. Though the spacecraft has multiple science objectives, and a suite of instruments to meet them, the sample return is the key objective.
Now, NASA has narrowed the choice down to four potential sampling locations on the surface of the asteroid.
Continue reading “It’s Time to Decide. Where Should OSIRIS-REx Take a Sample from Bennu?”
NASA’s OSIRIS-REx spacecraft has been at asteroid Bennu since Dec. 3rd, 2018. On that day, it went from travelling to the asteroid to travelling around it. Since then it’s been surveying and mapping Bennu.
Continue reading “This is the Closest OSIRIS-REx has Gotten to Bennu. Just 680 Meters Above the Asteroid”