The atmosphere of Neptune is similar to that of Uranus. It is about 80% hydrogen, 19% helium, and 1.5% methane. However the weather activity on Neptune is much more active, and its atmosphere is much bluer than that of Uranus.
If your goal is a legitimate tax deduction, then you must be giving to a qualified organization. Also, you cannot deduct contributions made to specific individuals, political organizations and candidates. See IRS Publication 526, Charitable Contributions, for rules on what constitutes a qualified organization.
You can deduct a charitable donation on your income taxes only if it is made to a designated 501(c) organization. Donations to groups not so designated are not eligible for tax deductions. IRS Publication 78 (see Resources) is a complete list of designated organizations eligible to receive tax-deductible donations.