Cover - shares	6 Months Ended
	Jun. 30, 2024	Aug. 13, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Amendment Flag	false
Document Period End Date	Jun. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Entity Information [Line Items]
Entity Registrant Name	Aspen-1 Acquisition Inc.
Entity Central Index Key	0001918080
Entity File Number	000-56406
Entity Tax Identification Number	87-4225965
Entity Incorporation, State or Country Code	DE
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Shell Company	true
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Contact Personnel [Line Items]
Entity Address, Address Line One	55 NE 5th Ave
Entity Address, Address Line Two	Suite 401
Entity Address, City or Town	Boca Raton
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33432
Entity Phone Fax Numbers [Line Items]
City Area Code	(561)
Local Phone Number	464-2841
Entity Listings [Line Items]
Title of 12(b) Security	None
No Trading Symbol Flag	true
Security Exchange Name	NONE
Entity Common Stock, Shares Outstanding		5,000,000