Looking on the internet deeply has found these results:

at a glimpse is the most popular phrase on the web.

in a glimpse 117,200 results on the web	at a glimpse 145,300,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Oct 7, 2009 ... This version of "In A Glimpse" was re Still of Charlie Sheen in A Glimpse Inside the Mind of Charles Swan III (2012 Still of Bill Murray in A Glimpse Inside the Mind of Charles Swan III (2012 Still of�... Review this title �. Message Boards. Discuss In a Glimpse (2011) on the IMDb message boards �. Getting Started \| Contributor Zone �. Contribute to This Page. mixed and mastered by Adam Whittaker ( spaceraymusic@gmail.com) GRIMUS SUMMER TOUR 2012: In a glimpse. This could be spectacular. But it's impossible. And I am ready to move on again. Insignificant Acting like a grain of sand in your eyes. Begging for a�...	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

in a glimpse

117,200 results on the web

at a glimpse

145,300,000 results on the web

More popular!

Oct 7, 2009 ... This version of "In A Glimpse" was re
Still of Charlie Sheen in A Glimpse Inside the Mind of Charles Swan III (2012 Still of Bill Murray in A Glimpse Inside the Mind of Charles Swan III (2012 Still of�...
Review this title �. Message Boards. Discuss In a Glimpse (2011) on the IMDb message boards �. Getting Started | Contributor Zone �. Contribute to This Page.
mixed and mastered by Adam Whittaker ( spaceraymusic@gmail.com) GRIMUS SUMMER TOUR 2012:
In a glimpse. This could be spectacular. But it's impossible. And I am ready to move on again. Insignificant Acting like a grain of sand in your eyes. Begging for a�...

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.