Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_26970 ( "Expedition" text, "Crew" text, "Launch date" text, "Flight up" text, "Landing date" text, "Flight down" text, "Duration (days)" text )

### Question ###
How many days were the station of Soyuz 35 in flight down were in orbit?

### Accurate SQL ###

SELECT "Duration (days)" FROM table_26970 WHERE "Flight down" = 'Soyuz 35'