Oracle get last 10 days sql

I need to get the last 10 days from now on I currently have following Oracle sql query to get the last 10 dates.

WITH DATES AS (
  SELECT sysdate - 10 AS value_date FROM dual
  UNION
  SELECT sysdate - 9  AS value_date FROM dual
  UNION
  SELECT sysdate - 8  AS value_date FROM dual
  UNION
  SELECT sysdate - 7  AS value_date FROM dual
  UNION
  SELECT sysdate - 6  AS value_date FROM dual
  UNION
  SELECT sysdate - 5  AS value_date FROM dual
  UNION
  SELECT sysdate - 4  AS value_date FROM dual
  UNION
  SELECT sysdate - 3  AS value_date FROM dual
  UNION
  SELECT sysdate - 2  AS value_date FROM dual
  UNION
  SELECT sysdate - 1  AS value_date FROM dual
  UNION
  SELECT sysdate      AS value_date FROM dual
  UNION
  SELECT sysdate + 1  AS value_date FROM dual

But I want a more proper and efficient way to get the past 10 dates. An Union query looks pretty dirty. How do I do this in Oracle SQL?