This is maybe the biggest week in a game-changing year, and it’s no time to be timid (which, by the end of the week, you definitely won’t feel like doing anyway). The setup: Four of the slowest, heaviest planets in the sky have spent years crawling into a formation that finally clicks together now, all of them parked in brand-new signs, all of them in a weirdly cooperative arrangement that only comes around every few generations. The last time two of these particular ones got together like this, it was the 1920s. So, it’s big big.

Key moments of the week:

• Sunday, July 19: Mars in Gemini sextile Saturn in Aries (2:10PM)
• Monday, July 20: Jupiter in Leo trine Neptune in Aries (3:22AM)
• Monday, July 20: Jupiter in Leo opposite Pluto in Aquarius (10:45AM)
• Tuesday, July 21: Jupiter in Le ...