WASHINGTON 鈥� Picking the “Top Space Story” is my favorite annual task as a reporter, as it forces me to look back upon the astronomical and space exploration accomplishments for the year.
No. 1: Kilonova: A meeting of two stars
This year really had some competition but one story rose above all the rest 鈥� the merger of two neutron stars.
This year鈥檚 pick is closely related to last year鈥檚 and shows how refined our ability to detect gravitational waves is becoming. There are now three gravitational wave observatories in the world and they are currently undergoing further upgrades to make them even more sensitive. I think the next big thing in gravitational-wave astronomy will be our detection of gravitational waves from the Big Bang, the event that brought our universe into existence. That may be years away and require space-based gravitational wave assets.
I feel compelled to add two other honorable mentions this year, my No. 2 and 3 picks.
No. 2: It came from outer space
In October 2017, astronomers discovered what they thought was an asteroid. But upon calculating its orbit they were stunned to learn that this was no ordinary asteroid 鈥� it originated from Named Oumuamua (OH鈥�-moo-ah-moo-ah), which in Hawaiian means 鈥渁 messenger from afar arriving first,鈥� this interstellar interloper also had another surprise in store for astronomers: it was shaped unlike any known asteroid in our solar system.
Oumuamua was long and slender and rather large. There was some speculation that this could be some sort of artifact from an alien civilization, perhaps a spaceship. Discussion about its actual composition and designation, whether it鈥檚 an asteroid, comet or alien artifact, is still ongoing. Follow-up observations were made and published papers as to the results will be forthcoming. The Green Bank Radio Telescope in West Virginia to see if any signals were coming from Oumuamual; to date, none have been reported.
No. 3: The great American eclipse
Truth be told, this would probably be everyone鈥檚 top pick of the year, as an estimated 200 million-plus people saw this celestial spectacle with their own eyes. NASA for the eclipse by conducting a multitude of observations by aircraft, spacecraft and ground-based assets. NASA also provided extensive public outreach about the eclipse. I saw it in Cookeville, Tennessee, and it was wondrous. I look forward to my third total solar eclipse somewhere in the future.
Speaking of NASA, here鈥檚 and what is in 2018. It is also worth highlighting what is going on with NASA鈥檚 , which will finally launch astronauts to the International Space Station using U.S. assets and no longer be solely dependent on Russia.
As you can see, 2018 already has a lot of potential candidates for top pick stories. Perhaps it will be one of them or maybe the universe will conjure up something on its own 鈥� only time will tell.
Have a marvelous and safe New Year鈥檚 celebration!
Follow Greg on Twitter聽聽and his聽聽to keep up with the latest news in astronomy and space exploration. Email him at聽skyguyinva@gmail.com.
