Summer 2019

„Zvaigžņotā Debess” The Starry Sky Summer 2019 (244) CONTENTS

ACTUALITIES

The news briefly. Ilgonis Vilks, Mārtiņš Gills. Page 2.

Baldone Astrophysics Observatory at the time cuts. Ilgmārs Eglītis. Page 4.

A kilogram is dead, long live to the kilogram! Ilgonis Vilks wrote down the narration of Vjačeslavs Kaščejevs. Page 10.

DISCOVERIES

First photograph of the black hole. Anna Gintere. Page 14.

A distant star demonstrates gas jets. Prepared by Mārtiņš Gills. Page 18.

EXPLORING THE UNIVERSE

A skeptic view of the dark side of the Universe. Olģerts Dumbrājs. Page 20.

How far can you look into the Universe? Ilgonis Vilks. Page 24.

SPACEFLIGHT

Cosmic rider „Space Rider”. Mārtiņš Sudārs. Page 32.

SCIENTIFIC ACHIEVEMENTS

The impressions of CERN's visit. Ilgonis Vilks. Page 36.

Latvia's way to CERN. How far are we? Raitis Misa interviews Toms Torims. Page 42.

TELESCOPES

Worldwide array of Cherenkov telescopes under development. Mārtiņš Gills. Page 48.

ASTROSITE

Griffith Observatory. Mārtiņš Gills. Page 50.

PHOTO STORY

Noctilucent clouds above Lielupe. Juris Seņņikovs. Page 52.

MOBILE APP

Sky map without additions. Mārtiņš Gills. Page 54.

OLYMPIC CHALLENGE

Invariant method – Painting. Prepared by Maruta Avotiņa. Page 55.

AMATEUR ASTRONOMY

Is anyone up there? Anna Gintere. Page 56.

OVERVIEW OF THE SKY

Celestial bodies in the summer of 2019. Juris Kauliņš. Page 58.