Subsequent Events	6 Months Ended
Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Note 10 - Subsequent Events On October 6, 2021, the Company, entered into an Agreement and Plan of Merger (the “Merger Agreement”) by and among Supernova, Supernova Merger Sub, Inc., a Delaware corporation and direct, wholly owned subsidiary of Supernova (“First Merger Sub”), Supernova Romeo Merger Sub, LLC, a Delaware limited liability company and direct, wholly owned subsidiary of Supernova (“Second Merger Sub”), and Rigetti Holdings, Inc., a Delaware corporation (“Rigetti”). Pursuant to the Merger Agreement, Supernova will become a Delaware corporation (the “Domestication”) and the parties will enter into a business combination transaction by which (i) First Merger Sub will merge with and into Rigetti, with Rigetti being the surviving entity in the merger (the “First Merger”), and (ii) immediately following the First Merger, Rigetti will merge with and into Second Merger Sub, with Second Merger Sub being the surviving entity in the merger (the “Second Merger” and, together with the First Merger, the “Mergers” and, together with the other transactions contemplated by the Merger Agreement, the “Transactions” and the closing of the Transactions, the “Closing”). In connection with the Closing, Supernova will change its name to “Rigetti Computing, Inc.” The value of the aggregate equity consideration to be paid to Rigetti’s stockholders and optionholders in the Transactions will be equal to (i) $1,041,000,000 plus (ii) the aggregate exercise price of in the money Rigetti Warrants (as defined below) and Rigetti Options (as defined below), in each case, outstanding prior to the effective time of the First Merger (the “Aggregate Equity Value”). At the Closing, each share of common stock and preferred stock of Rigetti that is issued and outstanding immediately prior to the effective time of the First Merger (other than “Excluded Shares”, as defined in the Merger Agreement) will be cancelled and converted into the right to receive a number of shares of Supernova common stock equal to an exchange ratio (the “Exchange Ratio”) determined by dividing (a) the Aggregate Equity Value by (b) the “Aggregate Fully Diluted Company Common Stock” (as defined in the Merger Agreement), and then dividing that quotient by $10.00. At the Closing and as set forth in the Merger Agreement, (i) each warrant to purchase Rigetti common stock (“Rigetti Warrants”) will be converted into a warrant to purchase shares of Supernova common stock, (ii) each option to purchase Rigetti common stock (“Rigetti Options”), whether vested or unvested, will be assumed and converted into an option to purchase a number of shares of Supernova common stock, (iii) each restricted share of Rigetti common stock will be exchanged for shares of Supernova common stock subject to the same terms and conditions as were applicable to such restricted shares and (iv) each restricted stock unit award of Rigetti will be converted into the right to receive restricted stock units based on shares of Supernova common stock. In connection with the execution of the Merger Agreement, the Company entered into subscription agreements with certain investors (the “PIPE Investors”) pursuant to which the PIPE Investors have committed to purchase in a private placement 10,251,000 shares of Supernova common stock (the “PIPE Shares”) at a purchase price of $10.00 per share and an aggregate purchase price of $102.51 million. The purchase of the PIPE Shares is conditioned upon, among other things, the consummation of the Transactions and will be consummated concurrently with the Closing. The shares of common stock to be issued pursuant to the PIPE Subscription Agreements have not been registered under the Securities Act and will be issued in reliance on the availability of an exemption from such registration. The PIPE Subscription Agreements further provide that the Company will use commercially reasonable efforts to file a registration statement to register the resale of the PIPE Shares within fifteen (15) business days after the Closing. In addition, in connection with the execution of the Merger Agreement, Supernova entered into a sponsor support agreement (the “Sponsor Support Agreement”) with the Sponsor, Rigetti and Supernova’s directors and officers. Pursuant to the Sponsor Support Agreement, the Sponsor and Supernova’s directors and officers have, among other things, agreed to vote all of their shares of Supernova capital stock in favor of the approval of the Transactions. In addition, the Sponsor has agreed that (i) 2,479,000 shares of Class B common stock issued in connection with the IPO (the “Sponsor Shares”) will be unvested and subject to forfeiture as of the Closing and will only vest if, during the five year period following the Closing, the volume weighted average price of Supernova’s common stock equals or exceeds $12.50 for any twenty trading days within a period of thirty consecutive trading days, and (ii) up to an additional 1,000,000 Sponsor Shares will be unvested and subject to forfeiture as of the Closing based on the level of redemptions of Supernova Class A Ordinary Shares by holders thereof in connection with the transactions contemplated by the Merger Agreement (calculated in the manner set forth in the Sponsor Support Agreement), and any such additional Sponsor Shares will only vest if, during the five year period following the Closing, the volume weighted average price of Supernova’s common stock equals or exceeds $15.00 for any twenty trading days within a period of thirty consecutive trading days. Any Sponsor Shares that remain unvested after the fifth anniversary of the Closing will be forfeited. The Sponsor Support Agreement will terminate upon the termination of the Merger Agreement if the Closing does not occur. The consummation of the Transactions is subject to customary closing conditions, including, among others: (i) approval by Supernova’s and Rigetti’s respective stockholders, (ii) the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and the obtaining of any consents required under antitrust laws in the jurisdictions specified on a schedule, (iii) no law or order enjoining or prohibiting the consummation of the Transactions being in force, (iv) Supernova having at least $5,000,001 of net tangible assets as of the Closing, (v) receipt of approval for listing on the New York Stock Exchange of the shares of Supernova common stock to be issued in connection with the Transactions, (vi) completion of the Domestication, (vii) the effectiveness of the registration statement on Form S-4, (viii) the accuracy of the parties’ respective representations and warranties (subject to specified materiality thresholds) and the material performance of the parties’ respective covenants and other obligations, (ix) no material adverse effect on Rigetti having occurred since signing that is continuing at Closing and (x) solely as relates to Rigetti’s obligation to consummate the Transaction, Supernova having at least $165,000,000 of available cash at the Closing. For full details and the filed agreements, refer to the 8-K announcing the Merger Agreement filed with the SEC on October 6, 2021. Management has evaluated subsequent events and transactions that occurred through the date condensed financial statements were issued. Other than disclosed above, the Company did not identify any subsequent events that would have required adjustment or disclosure in the condensed financial statements.

Subsequent Events

6 Months Ended

Jun. 30, 2021

Note 10 - Subsequent Events

On October 6, 2021, the Company, entered into an Agreement and Plan of Merger (the “Merger Agreement”) by and among Supernova, Supernova Merger Sub, Inc., a Delaware corporation and direct, wholly owned subsidiary of Supernova (“First Merger Sub”), Supernova Romeo Merger Sub, LLC, a Delaware limited liability company and direct, wholly owned subsidiary of Supernova (“Second Merger Sub”), and Rigetti Holdings, Inc., a Delaware corporation (“Rigetti”).

Pursuant to the Merger Agreement, Supernova will become a Delaware corporation (the “Domestication”) and the parties will enter into a business combination transaction by which (i) First Merger Sub will merge with and into Rigetti, with Rigetti being the surviving entity in the merger (the “First Merger”), and (ii) immediately following the First Merger, Rigetti will merge with and into Second Merger Sub, with Second Merger Sub being the surviving entity in the merger (the “Second Merger” and, together with the First Merger, the “Mergers” and, together with the other transactions contemplated by the Merger Agreement, the “Transactions” and the closing of the Transactions, the “Closing”). In connection with the Closing, Supernova will change its name to “Rigetti Computing, Inc.”

The value of the aggregate equity consideration to be paid to Rigetti’s stockholders and optionholders in the Transactions will be equal to (i) $1,041,000,000 plus (ii) the aggregate exercise price of in the money Rigetti Warrants (as defined below) and Rigetti Options (as defined below), in each case, outstanding prior to the effective time of the First Merger (the “Aggregate Equity Value”). At the Closing, each share of common stock and preferred stock of Rigetti that is issued and outstanding immediately prior to the effective time of the First Merger (other than “Excluded Shares”, as defined in the Merger Agreement) will be cancelled and converted into the right to receive a number of shares of Supernova common stock equal to an exchange ratio (the “Exchange Ratio”) determined by dividing (a) the Aggregate Equity Value by (b) the “Aggregate Fully Diluted Company Common Stock” (as defined in the Merger Agreement), and then dividing that quotient by $10.00.

At the Closing and as set forth in the Merger Agreement, (i) each warrant to purchase Rigetti common stock (“Rigetti Warrants”) will be converted into a warrant to purchase shares of Supernova common stock, (ii) each option to purchase Rigetti common stock (“Rigetti Options”), whether vested or unvested, will be assumed and converted into an option to purchase a number of shares of Supernova common stock, (iii) each restricted share of Rigetti common stock will be exchanged for shares of Supernova common stock subject to the same terms and conditions as were applicable to such restricted shares and (iv) each restricted stock unit award of Rigetti will be converted into the right to receive restricted stock units based on shares of Supernova common stock.

In connection with the execution of the Merger Agreement, the Company entered into subscription agreements with certain investors (the “PIPE Investors”) pursuant to which the PIPE Investors have committed to purchase in a private placement 10,251,000 shares of Supernova common stock (the “PIPE Shares”) at a purchase price of $10.00 per share and an aggregate purchase price of $102.51 million. The purchase of the PIPE Shares is conditioned upon, among other things, the consummation of the Transactions and will be consummated concurrently with the Closing. The shares of common stock to be issued pursuant to the PIPE Subscription Agreements have not been registered under the Securities Act and will be issued in reliance on the availability of an exemption from such registration. The PIPE Subscription Agreements further provide that the Company will use commercially reasonable efforts to file a registration statement to register the resale of the PIPE Shares within fifteen (15) business days after the Closing.

In addition, in connection with the execution of the Merger Agreement, Supernova entered into a sponsor support agreement (the “Sponsor Support Agreement”) with the Sponsor, Rigetti and Supernova’s directors and officers. Pursuant to the Sponsor Support Agreement, the Sponsor and Supernova’s directors and officers have, among other things, agreed to vote all of their shares of Supernova capital stock in favor of the approval of the Transactions. In addition, the Sponsor has agreed that (i) 2,479,000 shares of Class B common stock issued in connection with the IPO (the “Sponsor Shares”) will be unvested and subject to forfeiture as of the Closing and will only vest if, during the five year period following the Closing, the volume weighted average price of Supernova’s common stock equals or exceeds $12.50 for any twenty trading days within a period of thirty consecutive trading days, and (ii) up to an additional 1,000,000 Sponsor Shares will be unvested and subject to forfeiture as of the Closing based on the level of redemptions of Supernova Class A Ordinary Shares by holders thereof in connection with the transactions contemplated by the Merger Agreement (calculated in the manner set forth in the Sponsor Support Agreement), and any such additional Sponsor Shares will only vest if, during the five year period following the Closing, the volume

weighted average price of Supernova’s common stock equals or exceeds $15.00 for any twenty trading days within a period of thirty consecutive trading days. Any Sponsor Shares that remain unvested after the fifth anniversary of the Closing will be forfeited. The Sponsor Support Agreement will terminate upon the termination of the Merger Agreement if the Closing does not occur.

The consummation of the Transactions is subject to customary closing conditions, including, among others: (i) approval by Supernova’s and Rigetti’s respective stockholders, (ii) the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and the obtaining of any consents required under antitrust laws in the jurisdictions specified on a schedule, (iii) no law or order enjoining or prohibiting the consummation of the Transactions being in force, (iv) Supernova having at least $5,000,001 of net tangible assets as of the Closing, (v) receipt of approval for listing on the New York Stock Exchange of the shares of Supernova common stock to be issued in connection with the Transactions, (vi) completion of the Domestication, (vii) the effectiveness of the registration statement on Form S-4, (viii) the accuracy of the parties’ respective representations and warranties (subject to specified materiality thresholds) and the material performance of the parties’ respective covenants and other obligations, (ix) no material adverse effect on Rigetti having occurred since signing that is continuing at Closing and (x) solely as relates to Rigetti’s obligation to consummate the Transaction, Supernova having at least $165,000,000 of available cash at the Closing. For full details and the filed agreements, refer to the 8-K announcing the Merger Agreement filed with the SEC on October 6, 2021.

Management has evaluated subsequent events and transactions that occurred through the date condensed financial statements were issued. Other than disclosed above, the Company did not identify any subsequent events that would have required adjustment or disclosure in the condensed financial statements.