WASHINGTON, D.C. 20549


                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

        Date of Report (Date of earliest event reported): April 21, 2004

                           SIRIUS SATELLITE RADIO INC.
               (Exact Name of Registrant as Specified in Charter)

          Delaware                      0-24710                  52-1700207
(State or other Jurisdiction    (Commission File Number)      (I.R.S. Employer
     of Incorporation)                                       Identification No.)

1221 Avenue of the Americas, 36th Fl., New York, NY                 10020
      (Address of Principal Executive Offices)                    (Zip Code)

       Registrant's telephone number, including area code: (212) 584-5100


Item 5. Other Events.

     On April 21, 2004, we reported our financial and operating results for the
quarter ended March 31, 2004. These results are discussed in the press release
attached hereto as Exhibit 99.1, which is incorporated by reference in its

Item 7. Financial Statements, Pro Forma Financial Information and Exhibits.

     (a)  Not applicable.

     (b)  Not applicable.

     (c)  Exhibits.

     The Exhibit Index attached hereto is incorporated herein.



     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                        SIRIUS SATELLITE RADIO INC.

                                        By: /s/ Patrick L. Donnelly
                                            Patrick L. Donnelly
                                            Executive Vice President,
                                            General Counsel and Secretary

Dated: April 21, 2004


                                  EXHIBIT INDEX

Exhibit                         Description of Exhibit
-------                         ----------------------
 99.1     Press Release dated April 21, 2004.


                         STATEMENT OF DIFFERENCES

The registered trademark symbol shall be expressed as................... 'r'