The phrase "a wider sphere" is correct and usable in written English.
It can be used when discussing broader contexts, influences, or areas of activity, often in relation to social, professional, or intellectual domains.
Example: "The new policy aims to create a wider sphere of influence for community engagement and participation."
Alternatives: "a broader scope" or "an expanded domain".
Another reason lies in the changing nature of cancer research, which now encompasses a wider sphere than in decades past.
His influence as an expert on Japan and a wider sphere of Asian affairs extended nationally for more than a quarter of a century.
Yet there will be frustration at the on-field shortcomings at a club that have had the platform to establish themselves as stand-alone and prominent in a wider sphere as a consequence of Rangers' demise.
MADRID — Although the importance of the diplomatic speeches and ceremonies connected with President Poincaré's visit to Spain cannot be denied, I am in a position to state that the talk of an alliance between France and Spain, aiming at a wider sphere of mutual support than combined action in Morocco, is exaggerated.
Followers can be a good thing; having more followers means having a wider sphere of influence, which instantly increases the potential reach of every piece of content you share.
Thus, in the proper hands poetry can effectively represent anything, and in this way it certainly has a wider sphere of truth accessible to it than painting or music do.
Both schools had a wide sphere of influence, not only among the contemporary clergy but also among the monks and the laity.
This uncertainty is not present in the case of the 800 Latin words found in three Celtic languages (Welsh, Cornish, and Breton)—words drawn from a wide sphere of activities.
As we stood under that majestic tree, I looked up and admired its branches stretching heavenward and then outward in a wide sphere around us.
Specifically a social ecological model suggests that an individual's behavior is affected by a wide sphere of influences: intrapersonal, interpersonal, institutional/organizational, public policy, and the environment.
I'd say rather that his life in music so far has trumped them, by making himself essential to a much wider sphere of influence, exposure, and, in a meaningful sense, accessibility.
